Servers :: Ubuntu Hangs On Boot / What To Do?
Jan 5, 2010
Ubuntu server hangs when I boot with a wired Ethernet connection. The last thing I see in the console is code...
I have no problem when I boot to a Wifi connection even when Samba and openssh-server are installed. I see the same sequence of lines in the console as I reported initially (including Reloading, Restarting), but then the output continues with
* Starting the Winbind daemon winbind
Both the wired and wireless connections use dhcp. Obviously, I installed the OS using a wired connection, so it worked reliably once. I'm stuck.
P.S. I tried dhclient -r before rebooting. The machine did not shut down correctly and when I forced a reboot it appeared to hang at the usual place. However, after a long delay it proceeded to boot. Perhaps I am observing a delay due to a very long timeout. I will try another reboot now and check again in the morning.
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Apr 30, 2010
I just installed 10.04 i386 Server(release version)last night on an older IBM workstation (sorry, for the life of me can't remember model and I'm at work now); P4 2.4, 512Mb RAM, generic Intel graphics. This was a base install (aside from OpenSSH) with no window mgr. The HDD was wiped during the install and GRUB2 wrote to the MBR.
The install went smoothly, and on the soft reboot after the install I got a shell and was able to login, etc. and even SSH in.I unplugged the machine, moved it, booted, and got a cursor in the upper-left of the screen for about 3 seconds, and then the monitor would enter power save mode. (I tried 2 different models of monitor). While the cursor was on the screen the HDD access LED was blinking with activity, but that would stop right before the screen would enter standby. Tried a few reboots with the same result.
I'm thinking this is not a video driver issue (as similar threads have suggested),because the splash screen for the install disc renders properly and on the first successful boot the shell rendered appropriately at a high resolution.I can hold down shift to enter the GRUB2 menu, which also renders at a higher-than-text resolution and is defaulted / displays the correct options.
Most other threads with a similar yet non-video issue centered around GRUB2 issues with a dual-boot machine, which mine is not.I did go in via rescue mode (off the install CD -- the rescue option of the GRUB menu has the same result as a standard boot), and checked that my grub.cfg was correct, and I ran grub-install to no avail, and also ran grub-mkconfig on a subsequent boot to no avail, yet the grub.cfg generated appeared identical to the original generated during install.
The partition/file system is default layout.
20 Gb IDE (/dev/sda)
/dev/sda1 /boot ext2
/dev/sda2 Ext
[code]....
I'd be happy to give more info if someone has a troubleshooting direction in which to go.
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Jul 27, 2010
I'm trying to track down a problem with my server. Basically, I can get it to boot with a LiveCD and do rescue stuff with it - I just can no longer get it to boot. I've been slowly working my way through all of the error messages that come up during the boot process, and knocking them off one by one. Right now, they're fairly minor.
I'm trying to find out what the big issue is by looking at the logs. The last thing that it does is bring up apache2, says [OK] and then hangs. I've tried to do ls -lustR on /var/log to see what's the last log touched, and that's syslog or boot.log, but the last entry says something along the lines of Apache2 is up and running.
Where else should I look?
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Oct 31, 2010
Running Ubuntu Server 10.04 32 bit. Sometimes when I reboot it does not start up, It seems to be going through the boot process but then just hangs. I have had a look at the log files and can't see anything, but I'm not really sure what I am looking for.
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May 25, 2010
I'm running Ubuntu 10.04 and a small Windows 7 partition (cuz I can't get Ubuntu to run my MSI TV@nywhere plus card but that's another issue).I can log into Windows fine. If I choose Ubuntu, however, the boot process will go thru a few screen flickers. Then one of two things happens:1) I get a scrambled up pixelated image (not sure what it is) for about 3 second, then it goes into the login screen and I can log in normally.2) I get the scrambled up pixelated image and it hangs. This happens about 4 times out of 5 when rebooting.
I do have an nVidia card and a beta driver (they published it the 21st, I believe, of this month) but this happened long before that. It's happened ever since I installed any of the drivers (I've tried a couple different versions, hoping to fix this) for my card.
My system is a frankenputer:
Phenom II quad core 3.0 cpu
nVidia GeForce BFG 6600
4G DDR3
500G drive
Note: I do have 3D rendering when I finally get into the desktop. Everything works great, except that when I'm playing my mmorpg, Regnum Online, it freezes the entire computer and I have to reboot (not sure if that has anything to do with it or not).In case it's needed, this is my grub:(Second note: I'm sorry for the length of the post but I don't know how to upload documents/files to show)
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
[code]...
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Aug 28, 2010
When I boot up my laptop whith memorycards in the slots the boot hangs at "Wating for /dev to be fully populated", "Activating swap" or somewhere in between.If I take out the memorycards so the slots are empty, the laptop boots just fine...Its a CFCard and a SDcard in a PCIMAslot.Does anyone have a clue?Its not a big problem just very annoing to have to take out the memcards all the the time.
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Apr 20, 2010
HW config is: AMD Athlon 64 X2 5000+ Black Edition, MSI 785GTM-E45, 2X 1Gb Kingston HyperX PC2-8500. I have set up GRUB to dualboot openSUSE 11.2 and WindowsXP. Initially i had set up system with defaults: CPU@2600MHz (200X13) and therefore RAM@800MHz. Both openSUSE 11.2 and WindowsXP worked just fine. Memtest86 found no problems.
But after a while i decided to change this setup to: CPU@2500MHz (250X10) and therefore RAM@1000MHz, as it promised better overall performance. And now Windows still boots and works better then before. Memtest86 still can't find any problem. But openSUSE 11.2 hangs at boot. I've suspected cpufreq governor, but changing from Ondemand to Conservative in /sys/devices/system/cpu/cpu0/cpufreq doesn't help.
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Nov 29, 2010
This was working perfect and all of a sudden stops. Now when I try and start this service it simply hangs. I have searched and found a ton of reasons why this could be. No fix yet as worked.
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Jun 4, 2011
I have a home file server that I am trying to upgrade to natty 11.04. It was running 10.04 and was behind on updates due to lack of an internet connection for several months. I didn't have any problems applying all updates (sudo aptitude update; sudo aptitude full-upgrade) and then upgrading to 10.10 (sudo do-release-upgrade). I applied all updates to 10.10 (sudo aptitude update; sudo aptitude full-upgrade) without any problems.
However I encountered problems trying to upgrade to 11.04.
Running:
Code:
Hangs indefinitely. I don't receive error messages, it just sits there. I have to escape from Screen and 'sudo screen -wipe' to try anything else.
I tried changing my repository list to point to a different mirror, but no change.
If I had error messages I would have more to go on, but at the moment I'm stuck.
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Jan 12, 2010
I am running 9.04 Server (standalone). It had been running fine since I installed in last autumn. Upon reboot, fsck of the root filesystem was forced and it hangs at the same point (16.5%) every time. I was able to break out somehow with cntl-alt-del but the boot was to a read-only filesystem. So I couldn't disable the forced fsck. Instead, I tried to fsck there. It started, but hung. I couldn't do e2fsck -v as it needed the device and, although I worked on UNIX systems for decades, I am not familiar with the /dev/mapper stuff.
Looking at other threads, all involving the desktop GUI Ubuntu, I tried some of the suggestions. Went into the BIOS to see what I could disable. I killed the serial port and similar. (Some said that onboard modems interfered with the checks in /dev.) I also tried to boot from my original installation disk. That does work.The suggestion is to choose "Try without any change to your computer". The problem is that is not available on the server installation, apparently only the desktop (GUI). I had install, check CD for defects, test memory, boot from first hard disk, and something like repair or recover a broken disk. I started the last of them, as it seemed to be the only option. It failed because it couldn't get a dhcp address. I could manually configure it (as it is hard addressed anyway), but I didn't want to start screwing up configurations not knowing where it was going, whayt it would ry to do, and risk losing months of hard work.
Without help, I think I will be forced to install the OS on a second drive, use that install to fsck the original filesystem on the original disk, edit the fstab (or whichever has the config) on the original disk to disable fsck, and return to the original boot.I am building this server for a nonprofit and have put in many hours writing mysql/perl apache cgi code for them as a free service and hate to lose it all and set back everything.
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Dec 7, 2010
I have a NFS server and I'm periodically cleaning the cache by using the following lines:
Code:
/bin/sync; /bin/echo 1 > /proc/sys/vm/drop_caches
/bin/sync; /bin/echo 2 > /proc/sys/vm/drop_caches
during the last days the cleaning process gets stucked at '/bin/echo 2', here's the process data:
Code:
27426 root 20 0 5488 704 576 R 100 0.0 896:06.34 /bin/echo 2
the process keeps running, so I find this more strange since it's not in zombie or D state.
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Feb 1, 2010
I have this strange problem which I am unable to web search on and not sure what to do next. My Linux knowledge is between basic to intermediate but I know how to troubleshoot general hardware problems.
My problem is that Ubuntu 9.04 Jaunty 64-bit hangs while SFTP is active and dynamic IP changes. For example, I SFTP into my home server and transfer file then suddenly my ISP decides to renew my IP and give me a new IP while my SFTP client is still uploading files to my home server. This causes my SFTP client to stop working. Upon checking, my router is still running with a new IP lease from my ISP. My Linux box still powers on but typing anything from the keyboard does not make it "wake up" and put things on the monitor. Nothing seems to make it respond and the only way is to get about it is to power off and on. During that time, you cannot SSH into the server as there is no respond. SFTP into the server is not possible too because connection fails.
The server has all new hardware, latest BIOS, etc. Memtest86 shows no errors after running for more then 5 hours. I am unable to find anything out of the norm in /var/log/kern.log or in dmesg. All hardware seems to be working.
When I think about it, I tend to think OpenSSH (probably that is the default package in Jaunty) is causing this system hang whenever there is an interrupted connection from the outside world. However, I fail to agree with this is because I am sure the daemon and Linux can tolerate this situation without resorting to system hang. FYI, I have installed vsftp as well but this should not be a problem.
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Apr 30, 2010
I just upgraded my server from 9.10 to 10.04. I have ISPconfig installed on it and worked like a charm until the upgrade. Now when I point a browser to my site the page just hangs as if it is trying to load it but I never get an error nor does it load the page. I have tried to restart apache using /etc/init.d/apache2 restart in which I receive an fail error:
root@ubuntu:~# /etc/init.d/apache2 restart
* Restarting web server apache2 (9Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
[Code].....
After this I still get the same results when trying to load the page in the browser.
I cannot load anything in the www root or virtual host files.
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May 17, 2010
I have just installed Ubuntu Server 10.04. With Version 8.04 I had no problem to change the resolution from 640x480 to 1440x900 (console, no GUI installed). With 10.04, it does not work, the only resolution that works is 640x480. I have tried the following:
Changed: GRUB_GFXMODE=1440x900
Result: Success, Grub comes up with 1440x900, but when booting, the resolution changes to 640x480
Changed: GRUB_GFXPAYLOAD_LINUX=1440x900
Result: Booting -> blank screen > automatic reboot
Changed: GRUB_GFXPAYLOAD_LINUX=keep
[Code]...
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Jul 20, 2010
I've got a new Ubuntu 10.04 server install with a new 3 disk RAID 5. The boot disk is separate, not part of the RAID. I was trying to practice what I would do if a disk died to recover the RAID, so I unplugged one of the three disks. The machine now just hangs on startup. It shows fsck at the top of the screen but doesn't got anywhere from there. If you press a key it shows the Ubuntu splash screen. If I plug the disk back in, everything boots up normally. So, my question is, how do I get the machine to boot with one of the RAID members missing? I know I can recover it using the Live CD, but it would be nice to be able to get back into the machine without the CD.
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Jul 16, 2011
I forgot my root password for mysql, and after some searching I found several solutions to fix it. But none of them seem to work.I tried this article http://ubuntu.flowconsult.at/en/mysq...root-password/ with starting mysql with the --skip-grant-tables option. The problem is that nothing happens, it just hangs.Also tried the the --init-file option, that one runs fine, at least it returned to the command line. But the sql query in the file to which it point doesnt seem to do anything. The password wasn't changed to the one I specified in the sql file.Any idea what could be going on here, and how I could fix it?
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Sep 1, 2011
The attached log file includes two crashes/reboots within the past day or so I have recently started trying to set up / manage a Linux (Ubuntu 10.04.2 LTS) server in our data center (all other servers are Windows boxes). The server periodically hangs and becomes unresponsive and I'm at a loss to find anything in any log that indicates a specific cause. Sometimes it's up for hours, sometimes days (14 days at longest). Plugging a monitor in to the machine after a hang shows nothing at all. In an effort to troubleshoot the problem we've tried disabling APIC, more out of "educated desperation" than anything else. Unfortunately we are limited in some of the troubleshooting we can do, as we have a single client website hosted on the box (the reason we set it up) so anything that involves significant downtime is a problem.
As this is our first attempt at setting up a linux box, we are using a "well equipped" desktop grade machine but not what I would call "server grade" hardware. This is a standalone box, not a VPS. We are using a hardware, not software, RAID array and have plenty of memory in the box.
Caveats / Background:
I am relatively new to Linux in general. I spend much more time writing code than managing servers. I'm comfortable with working on the box, but I'm not really a sysadmin guy. I'm comfortable with the command line but have more experience with OS X (BSD). I am unsure of all of the tools / information / Logs that may be available, though I try to be thorough in checking what I do know. I did not physically configure the hardware so I'm not sure of all of the specs but I can get any info I need to troubleshoot. I may be skipping very basic steps or missing obvious places to look for information without knowing it.
A little more detail:
Real memory: 8GB
Ubuntu 10.04.2 LTS
Hardware RAID 10
Managing sites with Webmin version 1.550
Server is in a remote data center. Hands on-troubleshooting is difficult. We have attempted two Linux setups at this point. The first was on a hardware config identical to this one, but with no actual pieces of hardware reused. That attempt was using CentOS and we were attempting to set up CPanel. We scrapped that install because of this same problem (periodic crashing / hanging). The second attempt (this one) is showing the same behavior. The only thing I can really see in common are the hardware configuration (though CentOS & Ubuntu may have more in common than I think).
The box will run fine for hours, days, or even weeks, and then just stop responding entirely. I check all of the logs I know to check (primarily messages, syslog and kern.log) but I don't see anything that seems like an error to me. I do see lines that I don't understand that may or may not be problems, such as:
Code:
rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="814" x-info="http://www.rsyslog.com"] rsyslogd was HUPed, type 'lightweight'.
Most of our syslog entries seem to be logs of webmin related cron jobs running. My gut tells me that there is possibly some component in our configuration Linux does not like or needs a driver update (maybe the raid card for example), but I'm unsure of how to do more to track down or determine what that might be. Guess and check is expensive. Another thought I've had is that one or more of the cron jobs that are running are tripping something up, but it doesn't appear to be reproducible on demand and, again, I'm at a loss on how to test that theory any further. The same cron job does not appear to be running each time the server goes down. This is a portion the log just prior to our last hang:
Code:
Aug 8 11:00:01 linhost01 CRON[10771]: (www-data) CMD ([ -x /usr/lib/cgi-bin/awstats.pl -a -f /etc/awstats/awstats.conf -a -r /var/log/apache2/access.log ] && /usr/lib/cgi-bin/awstats.pl -config=awstats -update >/dev/null)
[code].....
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Apr 16, 2009
I recently setup a file sharing server with FC10 running Samba...
I got it running perfectly and it ran great for a few weeks. I was working on the machine today and tried to reboot it and noticed that it was stuck on FC10's new boot screen. I pressed the esc key and saw that the boot process was stuck on the smb service...
I don't get any errors and the machine doesn't freeze up or anything, it just hangs on the smb service and won't continue with the boot...
Is there anyway that I can get the system to skip the smb service so that I can get into the system? I don't know what's changed or what's causing this sudden hang in the system at boot.
I tried the ubuntu live CD to attempt to go in and edit the /etc/rc5.d scripts to try and skip the smb service start but I am not sure where to look for it...
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Apr 24, 2010
When I try to add a user to samba (using the GNOME UI) in F12, after enter all the information and click OK.it will just hang for about 20 seconds, and then do nothing. Window is still there, I click OK again and same thing.heres the steps i followed:
1) click preferences, Samba Users...
2) click add user
3) select user "joe" (example) from drop down of users
4) enter "joe" windows user name
5) enter password for joe (same as user password)
6) click OK
7) hangs 20 seconds then nothing.window is still there.click OK again same thing no user added
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Aug 11, 2010
Been trying to upgrade home server for several days and it keeps hanging on the mysql upgrade. Here's the what apt-get says code....
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Jul 24, 2011
I run a website that a very steady flow of traffic and Im seeing recent issues that I just dont like. Server is 10.04.2 on a supermicro i7-950/6gb RAM with two 500gb Samsung F3 drives in a software RAID1 (1x5400, 1x7200) and for several weeks, its been running very well. Recently, Im seeing the server hang for 5-20 seconds. IOwait goes through the roof, nothing can write to the disk. Apache logs stop, redis fails to rebuild caches, mysql errors and then it continues and moves back to normal operation
/ is ext4, the kernel was 2.6.32-server-x64 but since updating to 2.6.38-server-x64, the issue has dropped from maybe once per 10 minutes to once per 15 minutes. 3 IOstat copy/pastes show this when it hangs.
Code:
Total DISK READ: 0.00 B/s | Total DISK WRITE: 0.00 B/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
[code]...
No smart errors or smart diags show any issues with any of the disks and kernel.log shows near nothing other than a process hang, 120 seconds about 5 days ago.
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Aug 26, 2010
I upgraded from 8.04 to 10.04 LTS. Now when booting it hangs and drops me to a initramfs shell. This is a scsi machine with 3 drives. The error I get before dropping to the shell is that the drive with the uuid in menu.lst does not exist.If I type "exit" at initramfs, it finishes booting in a couple of seconds. The uuid is correct and maybe this is a timeout error of some kind. This is a machine that I would want to reboot without having to walk over and type "exit" at the initramfs prompt.
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Oct 11, 2010
I installed Maverick Meerkat today, and it was working great on the first boot (which is when I updated the system...). However, since then, it won't boot up. When I looked at the output during boot, I noticed that it hangs when it gets to:
Code:
floppy0: no floppy controllers found
After that, the hard drive access light on my laptop turns off and it just sits there.
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Mar 6, 2011
I've just had the power cut out while downloading a bunch of updates for Ubuntu 10.4
I haven't updated to the latest release because I'm lazy and have slow internet.
Anyway, once power had been restored, I turned my desktop on to find that my install will not actually load. It boots up and goes to the purple 'Ubuntu' screen with the orange dots, and just sits there (for about 15 minutes so far) without any activity on-screen.
I'm running Ubuntu 10.4 as I said above, and I'd really like to get a solution that does not include 'start from a fresh installation', since I've had to really wrestle with this install to get my wireless adaptor (USB) and wacom tablet working properly.
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Apr 20, 2011
Im having a bit of an issue installing Ubuntu Server 10.04 on a Dell Power Edge 1850. I am running RAID1 via the onboard PERC4 controller that is set to emulate MASS storage. I am able to boot from the disk and run through the initial setup, however, when I give it the go ahead to start the partitioning it hangs up on 33%. It does this on both the Guided full disk and guided full disk LVM. I have run a check on the disk as well as memory.
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Jun 17, 2010
I am looking to speed up my boot time; it is currently around the 2-2.5 minute mark from Grub to desktop (including about 15 seconds at the login screen while I type my password).
I have forced ureadahead to reprofile, and have rebooted a few times until the boot time is fairly stable/consistent.
No xorg errors and only one warning ((WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.)
However, dmesg reports the following:
Code:
...
[ 1.121369] Freeing unused kernel memory: 656k freed
[ 1.121926] Write protecting the kernel text: 4676k
[ 1.121977] Write protecting the kernel read-only data: 1840k
[ 1.146159] udev: starting version 151
[Code].....
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Jul 3, 2010
I think I've got a graphics/sound compatibility issue--both are onboard, but have no idea what to do. 10.04 will run in recovery low-graphics mode but won't load otherwise.
I have an old Gateway MX6030 / MA2 from 2005, 1.4Ghz Celeron, 1024 MB RAM. It had 9.04 on it. I got it out, thinking I could use it to store and remotely access research files for Mendeley and backup other data from my primary machines. I was running into wireless connectivity programs, so rather than fix it I figured I'd upgrade to through to 10.04 and plugged it into the router. 9.10 was a little choppy with the sounds when booting up, but worked. 10.04 won't boot properly. It gets to the Ubuntu splash screen with the little dots, which all turn red, then goes straight to a grey screen. The hard disk stops thrashing, and that's it.
If I hit ESC to bring up the grub menu, I can enter recovery mode and use the low-graphics startup to get into 10.04. Sound is still choppy on startup, but wireless, video, etc. all work. I tried to use a USB bootdisks with both 10.04 and Xubuntu 10.04 and got the same issue. The Ubuntu live boot can get to the menu but freezes after I make a selection. Xubuntu just brings up a low-res "XUBUNTU" image and freezes right after that. Hard disk stops turning, and the machine stops accessing the USB disk. Nothing happens.
Is there a way I can access 10.04 low graphics as the default boot? Is this a driver issue? This is a beginner question, obviously, and really, my goal here is just to be able to access the machine remotely so I can keep files for Mendeley in a single place rather than across two machines and three OSes. I don't know if I have the time or patience to learn how set up another machine as an FTP server to try and install through that route.
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Jul 25, 2010
I just recently installed ubuntu 10.04 and it works great! I got it to work with both of my printers, scanner, and zune! The problem is occasionally when I boot up ubuntu it stops and displays "[drm:rs400_gart_adjust_size] *ERROR* Forcing to 32M GART size (because of ASIC bug ?)"
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Oct 14, 2010
With Mythbuntu 10.10, the Live CD hands before it can fully boot the OS to a GUI. I'm running an IBM ThinkCentre (P4 2.6Ghz, 512mb RAM) with an NVidia 6200, and I'm using an HD LCD TV for the display.
I've tried to use nomodeset but that hasn't helped it boot. I've tried disabling dmraid also but I end up getting this error: 'General Failure Mounting File Systems'. I've had no such problems with the previous 3 versions of Mythbuntu. Although I didn't have this TV when I installed those ones... could that be the issue perhaps?
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Oct 22, 2010
I have ubuntu 10.04 installed on my MacBookPro7,1 (dual boot with reffit). Everything works fine. Today I closed my laptop and open it later again and saw a black screen with a blinking cursor. I was not able to send any keys to it. So I powered down (off button) it.
After Booting It I saw some kernel message, no errors, and then it stops and everything is freezed. Again no keystrokes can be send. The last kernel message is something about scsi. I tried to remove the "recordfail" in the grub2 menu but it doesn't help.
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