impossible to read a dvd
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-source-2.6.15 (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
Bug Description
I have a Thinkpad z60m and I cna use the dvd-rw but I can't read any dvd. Each time I tried with mplayer, kaffeine or totem-xine I have a lot message from the kernel like:
[4298917.367000] printk: 573 messages suppressed.
[4298917.367000] Buffer I/O error on device sr0, logical block 5062
[4298917.378000] end_request: I/O error, dev sr0, sector 20248
[4298917.389000] end_request: I/O error, dev sr0, sector 20256
[4298917.400000] end_request: I/O error, dev sr0, sector 20256
[4298917.411000] end_request: I/O error, dev sr0, sector 20264
The strange thing is I can mount and check at the data on the dvd without any problem.
I have libdvdcss install and the player began to read the dvd until it's freeze and I give me the message from the kernel.
The dvd is using sata so perhaps it's link to the problem. It's impossible to turn on the dma on mu HD and dvd:
~$ sudo hdparm -d1 /dev/sda
Password:
/dev/sda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
sudo hdparm -d1 /dev/sr0
/dev/sr0:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
thanks
Changed in linux-source-2.6.15: | |
status: | New → Fix Released |
I tried the different solution found on internet to turn off the ide system (thinkwiki page on sata problem and no dma)
so I tried:
to pass the parameter:
ide1=noprobe libata. atapi_enabled= 1
for the kernel in menu.lst, the second options is not known.
I place them in: /etc/modprobe. d/thinkpad
options libata atapi_enabled=1
options ide ide1=noprobe
and I rebuild the initrd with:
sudo dpkg-reconfigure linux-image-`uname -r`
but I have always the same answer with hdparm:
sudo hdparm -tT /dev/sr0
Password:
/dev/sr0:
Timing cached reads: 2568 MB in 2.00 seconds = 1283.55 MB/sec
Timing buffered disk reads: 8 MB in 3.49 seconds = 2.29 MB/sec
The timing buffered disk show clearly that the dma is not enabled on my dvd player.