There seems to be quite a craze about reducing the Ubuntu boot times to 10 seconds. I never really reached the 10 second mark.. for me it was more like 30 seconds from when I selected Ubuntu in GRUB to when I was prompted to type in the password in GDM. First of all, is this what is meant by boot time? Secondly, I know this already is quite a good 'boot' time, but just for the sake of tinkering around, is it possible to reduce the time that elapses between the GRUB menu and GDM?
I'm running 10.10 on an IBM Thinkpad R60 with 3GB RAM. I did a clean install of 9.10 and 10.04, and recently upgraded to 10.10. With all three, I'm noticing mething rather strange; after passing the PC's BIOS screen, I get a flashing cursor for about 20-30 seconds before Ubuntu starts booting. When I did the clean installs, I completely erased the hard drive, so I'm not sure what's causing it. The hard drive activity light is on when this happens, as well. It's very strange, as I have an old Dell Dimension 4550 with a slower hard drive and less RAM than the Thinkpad...yet it boots up faster, with no flashing cursor.
This little guide is for anyone with an HP Touchsmart Tm2 series running Ubuntu 10.04 and above. PLEASE NOTE: These workarounds, solutions, and tips have been tested and verified to work on an HP Touchsmart Tm2-2050us running Ubuntu 10.04 Lucid Lynx and Ubuntu 10.10 Maverick Meerkat. Installation: There are no problems I have experienced with installation except for the display not working on the live USB/CD images occasionally, this can be fixed by simply closing the display lid, and reopening it (this usually has to be done at least 2 or 3 times). Display: Most times after boot up, the display is black. A workaround for this is closing the lid and reopening it (repeat until the display works). Another reported solution is as follows:
1) Open a terminal 2) Type:
Code: sudo nano /etc/rc.local 3) Add this to the bottom of the file (this disables the ATI part of the hybrid graphics card): Code: echo OFF > /sys/kernel/debug/vgaswitcheroo/switch 4) Press CTRL-X (to exit), Y (to save changes), and ENTER/RETURN to accept the file name. 5) Reboot Note: This solution is also reported to increase battery life.
Trackpad: It may seem that the right click button is disabled, but it isn't. To right click, you must tap the very bottom right corner of the trackpad. Also, by default the trackpad does not have multi-touch enabled (even though it is capable of it). A reported solution for this is:
1) Open a terminal 2) Type:
Code: sudo nano /etc/X11/xorg.conf.d/50-two-finger-scroll-touchsmart-tm2.conf 3) Add this to the bottom of the file: Code: Section "InputClass" Identifier "enable synaptics SHMConfig" MatchIsTouchpad "on"
I managed to install a second hand 10Gb HDD on my old P4. I want to see how I can use this extra disk to speed up Ubuntu 10.04 if possible.
I installed my swap onto this second drive but since I never use swap I can't see any real improvement. Next, I'm considering the creation of a new partition on that disk that would handle /tmp. Could that improve access times?
Finally, what other tricks could I use with this 2nd HDD to speed things up?
At work, we use two very powerful servers to host a series of VMs to do some heavy-lifting analytical work. Part of my job has been to evaluate a variety of different virtualization environments, including changing the host OS (or dom0 kernel for Xen), changing the platform (KVM, Xen, ESXI, etc.), and changing the guest OS types.
I noticed a number of behaviors that Ubuntu exhibited that set it apart (almost always in a positive way) from the other OSes. Most astounding though was that when an Ubuntu 10.04 AMD64 server VM was booted from an Ubuntu 10.04 AMD64 server host (that is, same version of Host OS and Guest OS) in KVM, the guest boots in roughly 2 seconds. At least, the guest boots faster than the VNC connection can initialize.
I'm certainly not complaining, but I can't for the life of me figure out how this could be possible. I understand that the Upstart init daemon is very good about startup times.
First off, i have ran 10.10 for the past 6 months without any problems. Then last week i decided to try 11.04. I installed using Wubi. Now the problem is the computer only freezes when I am using a web browser (firefox). it completely freezes where I can do nothing, so I will kill it with the power button. When i try to restart, not even the bios will boot up, just a blank screen with the num/caps lock key flashing.
But after trying to restart several times the bios and boot loader will eventually come up and will start up normally until the same thing happens. I decided to reinstall using wubi so when i tried to boot itno windows, the windows partition was corrupted. I fully restored windows and installed 11.04 with wubi again only to have the same freezing problems.
I will be trying 10.10 again and see if it just a 11.04 issue, but thought this problem should be out there if anyone else has a similar experience
I have just installed Fedora12 x86 64. On booting more often than not it hangs just before completing the login screen.I will try some of the options in the wiki. In the mean time has anyone else experienced this and resolved it.The odd thing is although the keyboard is not on, (num lock light goes out as boot starts and only comes back on if it has fully booted), the mouse will move around the screen but the click has no effect.Note the same behaviour was shown on the x86 64 live cd which I needed to install to enable me to create a bootable usb stick from the x86 64 DVD.
I actually have it installed on two of my computers. One is an older Acer Aspire 3100 that dual-boots windows 7 and Ubuntu 11.04, and an Acer Aspire ONE that has Ubuntu 11.04 as main OS. Before Ubuntu, (even currently) I'm a MAC user, and i'm really liking Ubuntu. On my 3100 it works just fine except the screen flicker on wake, but a quick reboot will solve that.
On my Aspire ONE i've had to re-install ubuntu multiple times. (we're talking 5 or 6 in the last month) Sometimes, it'll boot up to absolutely nothing. One time I got a weird error message everytime it booted. The last install froze up a lot, and eventually would only start to boot into setup. I reinstalled Ubuntu, again and it worked until I shut it off. Boot back up, same thing. Threw me right into setup. I was able to get around it after 5 or so tries of rebooting, hitting ALT F11 and somehow got into ubuntu recovery, but loaded normally. I'm using it now and it's working great currently.
Specs on the ONE
1.5GB Ram 8GB SSD (could this be the culprit?) ATOM (1.8 or 1.6) GHz Processor.
Halfway through this fiasco, I put windows XP on it and used it solid for 3 days without any of the mentioned above issues.
I don't know why, but when i first boot openSUSE at the morning in my Aspire it hangs over and over again. I don't know why is this, but the gecko appear, the white bar appear, and moves 1cm, and then, puff no more blinking from the hard drive. Then i force te reboot, over and over until works.The message is: acerhdf: no Aspire One hardware foundWhen i first installed the mini with openSUSE it works perfect for a week, and then start this problem.I have tried with different kernel flavors (like desktop) and still nothing.
LIVECD of 11.3 Gnome works fine in my old PC. I installed several times and each time system freezes/crashes during boot. I am linux newbie, so, I am trying to figure out my problems. In Livecd I noticed Hardware info list's my SATA disk as IDE. Driver Modules: "ata_piix"Attached to: #24 (IDE interface). Is it right? I have posted Hardware information output in 01: None 00.0: 10105 BIOS [Created at bios.186] - Suse 11.3 install problem My machine specs are: Intel DG31PR motherboard, Intel core2duo, 3 GB DDR2 Ram, 250 GB SATA harddisk
The track pad on a Macbook Pro 8.3 is hypersensitive and interprets the lightest touch as a click. Even brushing the track pad with the sleeve of my shirt counts as a click. How do I decrease the sensitivity of the track pad?
I tried to install Portable VirtualBox using wine and even though I installed it on my /host/ folder (with 19 gb free) it downloaded some massive file on my Wubi installation (with 60 mb free) and now I am down to 3 mb left on Wubi and I can't find the massive file that it downloaded. Tried using the disk usage analyzer but nothing came up. Windows is unbootable so I can't use it.
Before this, Ubuntu would constantly decrease the amount of disk space I had free for no reason as well. It would jump from 120 mb one day to 50 mb.I moved my documents to my Windows folders but the disk space only stayed at 100 for another day or so before it went down again. apt-get auto/clean, localepurge, and deborphan are completely useless and there's something else going on behind the scenes here that I don't know about.Using Ubuntu Jaunty.
I am runnin Ubuntu 9.10- the Karmic Koala on acer aspire laptop. since everythin in this netbook is crap. so I hardly can see movies that so much going on in them( when so much happens, the screen freezer for a while therefore i miss the most interesting bits) I used kinda every players. the only one that works for me is mplayer since it does not require high spec it works good but it has its own costs. if I use mplayer then i have the porblem of the sound (eg i can hear stuff before it happening) I am now just wondering if there is a way to decrease the quality. I really dont care if i have great quality or not as long as i can c whats happening ( at least for this netbook anyway)
I was wondering why the chached RAM doesn't decrease at the same rate or near that when scanning is done & the scanning software is closed as it increases during scanning ? When the cached ram reaches a certain point while scanning, the software crashes & I loose my scans
I'm trying to decrease the tcp TIME_WAIT state which, from what I understand, occurs on the host that initiates the closing of a socket by sending a packet with the FIN bit set. Most people say to change /proc/sys/net/ipv4/tcp_fin_timeout to a lesser value. I have tried this many times and it makes no difference. The TIME_WAIT's still linger for ~ 60 seconds. This link says that it actually adjusts the FIN-WAIT-2 state and I think they're right.[URL]
Quote:
/proc/sys/net/ipv4/tcp_fin_timeout
Time to hold socket in state FIN-WAIT-2, if it was closed by our side. Peer can be broken and never close its side, or even died unexpectedly. Default value is 60sec. Usual value used in 2.2 was 180 seconds, you may restore it, but remember that if your machine is even underloaded WEB server, you risk to overflow memory with kilotons of dead sockets, FIN-WAIT-2 sockets are less dangerous than FIN-WAIT-1, because they eat maximum 1.5K of memory, but they tend to live longer. Cf. tcp_max_orphans.
Here's what the netstat man page says about these two different states:
Quote:
TIME_WAIT The socket is waiting after close to handle packets still in the network. FIN_WAIT2 Connection is closed, and the socket is waiting for a shutdown from the remote end.
Desperate to reduce RAM usage of my tiny VPS running Ubuntu 9.04 and Apache2.2.11, here I saw that: On Linux, each child process will use 8MB of memory by default. This is probably unnecessary. You can decrease the overall memory used by Apache by setting ThreadStackSize used by Apache by setting ThreadStackSize to 1MB in.
So I tried to give the suggestion a try. But when I append: ThreadStackSize 1000000 in my /etc/apache2/httpd.conf <IfModule mpm_prefork_module> directive, and restarted apache, it failed with this message: Invalid command 'ThreadStackSize', perhaps misspelled or defined by a module not included in the server configuration
So I figured out that the relevant modules are neither enabled nor available on apache2. Now I am wondering whether there is a way to decrease the ThreadStackSize without the need to compile apache from source? If not, what should I do?
I'm having a huge performance decrease when I'm on Battery Power. Plugged in this thing runs AMAZING, HDMI with HD video, I can run compiz 3d, full desktop advanced effects, HD video from ....., you name it. Just when I pull the cable out it slows down. I tried disabling ATI powerplay but that didnt help.
Is there a way I can toggle the performance, so that I can get "plugged in level performance" even when i'm on battery power? I'm not too bothered about how long the battery lasts. I'm usually always near an outlet.
Currently, I have on internal HDD 160GB in size. 20GB are for windows XP partition and the rest is assigned for ubuntu partition(s?). i want to make it now more equal in size, but how can i do that? I'm using ubuntu 11.04...
1- Does Linux operating system decrease the original size of the HDD? because first I was only using a Windows 7 Ultimate on my Laptop Lenovo G550 4446 the D:/ partition size was 140 GB Free of 190 GB.. After I installed the Linux ubuntu along with the other Windows 7 I found the D:/ partition size became 68 GB free of 122 GB... Why the hell the size decreased?? Did the HDD destroy?
2- How can I hack Wireless Network of type WPA2/WPA or WEP using the linux? I have heard that I can do that using Shell Konsole, but I can't see Shell Konsole in my Linux ubuntu 10.10... Is it required to be installed over the internet or something, or if it is already installed within the operating system, can you tell me where I can find it?
I am new to Fedora, and I noticed when I opened my home folder that I only had 54GB. My HD is 120, and when I used the disk utility, I noticed that 64GB are in ext4! What?! This was not a problem in Ubuntu, so why has it happened now? Is there anyway I can decrease the size of ext4 and give some of it to Fedora?
Initially i was on kubuntu 10.10 with kde 4.5.x and i realized that animations throughout kde stunk. For example, the kickoff menu would raise and lower very jerky. So thinking this was a kubuntu or even a kde 4.5.x problem, I made a switch to opensuse 11.3 and kde 4.4.x. After install i noticed that all animations, including the menu raising and lowering, where very smooth and crisp (like they should be). I later realized I wasn't even using all my hardware's power so I put my two gtx 460s in SLI=auto. After a reboot I realized that once again all animations got jerky again . This leads me to believe,and for good reason, that kde's visual performance is degraded with SLI enabled.
I am running Arch on a Sony Vaio 64-bit computer with an ATI Mobility Radeon HD 4650 graphics card (xf86-video-ati installed).
I am attempting to decrease screen brightness; I have tried editing /proc/acpi/video/VGA/LCD/brightness (gives me: "write error: Invalid argument") and xbacklight -set <value> (gives me: "No outputs have backlight property").
I have an issue with few servers. All have OEL 5.5 and various versions of oracle (mainly 10g something).
I've noticed on one machine that amount of free memory is slowly decreasing. When it comes to less then 30M, application has problems. Ive tried adding mem on this machine (virtual), and it behaves the same.
The same is on physical machines I have simmilar, if not the same config. Variations are with physical memory installed, and it does not matter if servers have 2G, or 8G, free -m gives around 30 free
It does not swap, and does not make some big issues on other machines, but on this one, application that uses this DB timeouts the user. Is there some chance to check what is creating this issue?
P.S. I've tried with DB admin to check something related to oracle itself, bit when we shutdown instance, Oracle frees 1.5G allocated to him, but nothing else. Will try testimg a bit more, but any thought on this is usefull. This is production server, so no big issues can be done. Will try to copy it to other hardware and do some testing, but then no App server available to attack it.
On F12 and sure need to upgrade. Way back when I first had a bad disk on the "system" disk that was 80G, I only had a 200G lying around. Next time that happened my other 200G wasn't "big" enough it said, so I put a 500G in there. Now it seems I got more bad blocks etc but I need to lower the size 'cos I don't want to put a 1Tb HDD in there. My question from all of this is, how do I decrease the image so I can put it all on a smaller HDD?
Used space on the system disk's partitions is about 30G, so an 80G disk should be sufficient. What I can think of is that I need to "move" all data to the "beginning" of the HDD, then make an image of it but and the entire disk, just the data. I've tried that with no luck since the image seem to get as big as the HDD, hence why I always needed to increase the HDD all the time.
Lately I have noted a decrease on the performance of my Ubuntu Karmic Koala 64 bits installation. It takes longer times to open applications and documents and sometimes the windows fade to grey and I have to wait. Can anyone give me some hint on where to start looking for a solution?
I am facing an issue with 100% CPU usage under my system when running VirtualBox. Here are some further details:
My System Information:
CPU 1 name: Intel(R) Pentium(R) Dual CPU T2310 @ 1.46GHz CPU 1 level 1 cache size: 32K Data cache. 32K Instruction cache. CPU 1 level 2 cache size: 1024K Unified cache. CPU 1 Mips: 2926.20
[Code].....
Well, each time I run Windows XP from my VirtualBox, I see the CPU usage at almost 100%. I experience a slow system even if no programs were running on my hosted Windows XP version.
I was wondering if there is a way for me to play with the settings so I can slightly enhance the performance. My PC is relatively fast under my Linux operating system. I need to know if there are some tips that I may follow when configuring the settings of my VirtualBox so i can achieve better results.
in the last instalation of slackware(13 and 13.1) when I do login the sound is down, the vol speaker is zero, and I have increase this by alsamixer, kmixer etc.I try the alsaconf, alsactl estore but it back zero(no sound). How a do for it stay in predefined volume
