I recently added a SS drive and after 2 hours it went into read only and busy mode. The machine see the drive as does tools like fdisk, fsck, qtparted, kde partition manager but I can't reset the device to make it write-able Do I need to RMA the device (it's 12 hours old) or is there a method to make the device usable again?
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I need to change a filename but when I boot up I get the message root device is read-only. Is there a way of changing this so that I can change the filename. I have a Mac Pro running Leopard OSX. The graphics card an NVIDIA 7500GT or driver has failed. It was suggested elsewhere that I change the relevant kext files to filename.kext.old, which I did, now when I try to boot start in OSX I get a message in various languages telling me to restart. I have tried booting in safe mode and from original Installation CD. In Safe Mode I get the same multi language splash screen, from CD I still have the graphic card problem, screen freezes and artifacts appear. So I boot up straight into CLI by holding down CMD-S hoping to be able to change filenames back but it says device read-only.
View 2 Replies View RelatedI am trying to write to a Ramdisk because I suffer from terrible IO speeds on my VPS. It uses openVZ and I run a Centos 5 distro.
So i created my ramdisk with '/bin/mount -t tmpfs -o size=1G,nr_inodes=10k,mode=0775,noatime,nodiratime tmpfs /tmp'
but whenever I try and copy files to it, it just spams me with 'no space left on device even though there is!
Here is the output of df:
/dev/simfs 157286400 6511452 150774948 5% /
none 16441412 4 16441408 1% /dev
tmpfs 5242880 1296 5241584 1% /disk/test
tmpfs 5242880 1296 5241584 1% /disk/test
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Is there a way to make fedora 11 can write the hfs+ partition? Beside fedora i have mac os x, and usually i use third partition(fat) as medium to transfer file from fedora to mac.
View 8 Replies View RelatedI'm unable to reset using either the reset option in gnome shell or the command using a terminal. When I select it the shell exits and displays the graphic "exploding" and then it just sits there. Shutdown works fine; just no reset. Any ideas? I've installed from the DVD. I booted the live CD and it resets just fine so I know it's no my hardware
View 1 Replies View RelatedFlash is having really trouble in firefox, it works in chrome on the other hand.You can see the large white boxes that randomly appear while flash plays.Thunderbird's lightning fails to install and gives this error.
System Spec's
OpenSuse 11.4 64bit
Intel i3 CPU and Graphic's
4 GB of ram
Webcam (working)
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(works some times, doesn't seem to load right but that might have something to do with the fact that is shows under lsusb. I need to learn how to reset a usb device)
I was able to write a script on Linux Shell for send and read data to a serial port. But I�m facing a problem now. If by any mean I send to de device anything else than the predefined strings, stated by the manufacturer, the device ceases to respond. The only way I found its to turn off and then turn on the thing again. Which its very impractical. Its there any way to "reset de UART chip on the device" or send some string based on the RS232 standard that clean the device buffer?
View 2 Replies View RelatedI noticed there're lots of "usb 3-1: reset low speed USB device using uhci_hcd and address 2" warnings in two of our server's syslog. They occur roughly every 20min. The server is a Dell R710 with CentOS 5.4 X86_64 installed. I suspect it's the virtual CD device of the iDrac6 but not sure. How Can I identify which USB device triggering these warning? The related syslog is as following:
Code:
Apr 13 23:32:47 bak2 kernel: usb 3-1: reset low speed USB device using uhci_hcd and address 2
Apr 13 23:42:44 bak2 kernel: usb 2-3: USB disconnect, address 3
Apr 13 23:45:53 bak2 kernel: usb 2-3: new high speed USB device using ehci_hcd and address 4
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All I do is connect my Palm to the usb port, and it starts a reset loop. It resets, gets booted, and crashes to reset again. What's up with this? BTW, this same palm worked with gnome pilot on Debian and Vector installs, and works currently with an XP install. But on my 11.2 suse, it goes crazy.
View 9 Replies View RelatedOn karmic the audio input device would constantly reset to muted. On lucid, it keeps resetting it to the microphone jack at the back of the computer (While I have a webcam up and running that it knows is what I use. How can I get it to remember my audio input? One more functionality issue till bingo. How can I give a window "Widget" status: I want it not to minimize when I hit ctrl alt D (Like conky and other widgets).
View 1 Replies View Relatedis this normal to see in dmesg multiple times after booting (screenshot)
Code:
lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
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I would like to make group changes on serial ports permanent. I can become root and use chgrp:
chgrp uucp /dev/ttyaa00
but it only lasts until reboot. I think I need to add this line to a startup file but not sure where. I want this to work in run level 3 and 5 (at least). I have a digi portserver and their realport software. The ports are /dev/ttyaa00 through /dev/ttyaa07 and are in group root on startup. I want them in uucp so any user in uucp can use them. This is for F10.
I recently compile Kernel 2.6.34 (to fix the AMD PowerNow issue with 1055T processor, and it worked!) However, the device
/dev/shm
starts up at boot as Read-Only.
Google Chrome requires this device to be user-writable, or it won't start up. Presumably, the stock kernels (and all that are updated) have it set to User-Write. I have not noticed any other ill effects with the permission being read-only. If I do:
sudo chmod a+w /dev/shm
Everything will work from there, but each time I reboot, I have to do that. How do I make that permission-change permanent?
df -h [URL] I did the following command to find everything is in /usr or /var, then tracked it down to /usr/lib and /usr/share as the main offenders, but out of all the directories none are more than 1mb or so.
du -sh /* | sort -gr | head -n 5
I tried to uninstall firefox, which is what got me in this mess in the first place, the log claims it will remove ~240 mb but failes on a "E: Write error - write (28 No space left on device)" [URL] If I could juggle something onto an external hard drive so I can uninstall firefox I would be out of the wood. Failing that I believe a new install is in order.
I have 4 Dell R200's with Seagate 2x250Gb drives running software raid on CentOS 5.2 kernal 2.6.18-92.1.13.el5. They all get these errors 5-10 times a day and when the errors occure the servers apear to freeze and drop all network connections, very frustrating. I've updated to smartmontools 1:5.38-2.el5 and confirmed with Seagate that I have the latest drive firmware, and am now at a loss as to how to fix this. All of the systems report the problem only on sda not sdb.
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which cropped up today after no changes to the system: I can successfully ssh into my ubuntu 64-bit 9.10 machine (via OS X with iTerm), but after about 30 seconds, the connection drops with the message "Connection reset by peer Connection to xx.xx.xx.xx closed".
If I then try to immediately ssh back in I get: "Write failed: Broken pipe". If I try to immediately ping the machine instead, I cannot ping it until the ~10th try. Eventually I can log back in again, only to be kicked off after between 5 and 60 seconds. I called the network people and their are no known issue right now with networking. The networking on the ubuntu machine is otherwise fine, it seems. In the /var/log/auth.log file, it simple says:
Quote:
Feb 9 14:19:20 harriet sshd[4134]: Accepted password for xxx from xx.xx.xx.xx port 55105 ssh2
Feb 9 14:19:20 harriet sshd[4134]: pam_unix(sshd:session): session opened for user xxx by (uid=0)
Feb 9 14:19:28 harriet sshd[4046]: pam_unix(sshd:session): session closed for user xxx
The solution I come across to a similar problem is to add a "ClientAwakeInterval" number to sshdconfig, but this (as expected) doesn't fix my problem.
I have a lot of RAR files and ISO. Is there a program like Winrar which could open them in Linux? Cause now it only opens zip files . Also I would like to know what the best package manager is (I mean the easiest -used to use the Software Manager in Mint 9 Xfce).At last I would like to know if there is a good program to make disk images to reset the system.
View 9 Replies View RelatedIf I were asked to write a linux device driver for a pen, How should I start?
View 4 Replies View RelatedQuote:
Originally Posted by anishakaul
When you copy paste the Makefile from post 7, make sure you delete the spaces shown in RED below by Backspace key and then press TAB
Code:
obj-m += hello.o
all:
........make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
clean:
........make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
how to write a device driver for USB
Is there a way to log on which time my system writes data to a specific (mounted) device? I have to know what an how much my system writes.
View 1 Replies View RelatedI know, I know..."How long is a piece of string"?
I have one of these devices:
[URL]
Of course, it's Windows only, and XP only at that. However, the data that needs transferred between the device and the computer should be fairly basic, unless it offloads a lot of processing to the computer. I'm not a programmer, nor do I play one on TV, but I have written some fairly complicated microcontroller programs and some basic Java GUIs. Besides writing the actual code, how hard is it to do whatever needs done to make a Linux device driver, apart from the code to make the device work?
I need programmer a timer of 10 ms for read/write a USB device
View 4 Replies View RelatedIf I were asked to write a linux device driver for a pen, How should I start???
View 5 Replies View Relatedi have some basic knowledge about device drivers.can any one tell how to write drivers for virtual modem, Actually my project is to implement communication between the two PCs by using two virtual modems. so for that i need to write the code for the virtual modem which it should understand all the AT commands exactly as physical modem and it should send/receive call and SMS.
View 1 Replies View RelatedI have a write call to a ttyACM serial device that blocks after several hundreds bytes are written.I'm writing in ~25 byte chunks, so I have 5-8 successful writes, then the next write blocks forever.I can bypass the blocked call using select, but I can never call write again without closing and re-opening the port.
The serial port is opened correctly because I can read from it just fine. Write permissions are correct, and it's opened RW.The code is likely correct because I tested the same code using the same device on a pure RS-232 serial port, and it worked fine - no block. Is there anything to know about the linux ACM module?It's my understanding that write calls basically shouldn't block.They're supposed to return -1 if there's an error.
I'm writing a C program that reads the boot sector of a USB disk. (it is mounted as /dev/sda1). I'm able to read the sector, by the calls code...
The problem is when I wish to write. I use the call:
bytesWrite = write(fd, buf, 512)
The 'write' returns the value of 512, which looks as if the write was successful, yet
when I read again the /dev/sda1 device, I see that no writing was actually made.
Can anybody tell me what do I need to do in order to allow an actual write to the
device?
I am final year MCA student. I like to do my project in Linux. I know a little in C. I am pursuing RHCE certification. I am using rhel5. I am interested to write linux device drivers and willing to do my project in that.
View 9 Replies View RelatedMy wife is purchasing a netbook with no internal CD/DVD writing device, so we plan to purchase an external CD/DVD USB-2.0 read/write device. Our local PC shop has the following 3 external USB-2.0 DVD read/write devices:
(a) Samsung DVD-Burner SE-S084F/RSBS [not listed on Samsung site - too old ? ]
(b) LG DVD-Burner GE24NU21 USB2.0 [not listed on LG site - too old ? ]
(c) Super-Multi Portable DVD Rewrite (GP10 Lite USB2.0 Slimline) GP10NB20 (mentions Mac OS/X support, which is encouraging)
None of those are listed in the openSUSE HCL. Has anyone successfully used any of these with GNU/Linux (my google surfing on this revealed no GNU/Linux complaint nor any success stories) ? Or is there another such external USB-2.0 read/write DVD burner device that is recommended ?
I can browse the iso image easily enough with a loopback mount, but when it comes to mounting the actual CD (which I did first), I get:
Code:
$ sudo mount -t udf,iso9660 /dev/dvd /mnt/dvd
mount: block device /dev/dvd is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/dvd,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
/var/log/messages isn't very helpful, either:
Code:
Jul 15 15:15:56 bkorb-dt kernel: attempt to access beyond end of device
Jul 15 15:15:56 bkorb-dt kernel: sr0: rw=0, want=68, limit=4
Jul 15 15:15:56 bkorb-dt kernel: isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16
$ md5sum openSUSE-11.3-DVD-x86_64.iso
adf5d2a0a03c1e3aaf102fd6a4771b87 openSUSE-11.3-DVD-x86_64.iso
I burned it with K3B and it gets the same result trying to mount it. K3B seems to know that the image is an iso9660 and is able to display the various 9660 id fields just fine. It just won't mount.
I used dual booting with Windows Xp and Ubuntu 10.04. Because errors, I reinstall Windows and then I could not enter GRUB, and Ubuntu partition disappear. I tried to reinstall ubuntu using live CD but I could not detect last ubuntu partitions. After I installed fresh Ubuntu on new partition, I got error message like this:
Unable to mount floppy0 Mount: block device /dev/fd0 is write protected, mounting read-only Mount: could not determine the file system type, and none was specified
