Hi, I find that I need to shut down (power off) and restart the computer after burning any dvd with growisofs (or any other utility that depends on it). Only after doing this can I burn another CD or DVD. If I don't do this the computer just hangs when attempting to burn and becomes unresponsive to any key pressed from the keyboard (not even alt-cntrl-del). I am using kernel 2.6.22.2 with Debian/Etch. The CD/DVD burner is TSSTcorpCD/DVDW TS-H552B, ATAPI CD/DVD-ROM drive ATAPI 48X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33) Googling I could find another such report but there was no solution offered. I would be grateful for your help. sincerely b thomas

B Thomas (no@email.com) writes: > Hi, > > I find that I need to shut down (power off) and restart > the computer after burning any dvd with growisofs (or > any other utility that depends on it). Only after doing > this can I burn another CD or DVD. If I don't do this > the computer just hangs when attempting to burn and > becomes unresponsive to any key pressed from the > keyboard (not even alt-cntrl-del). Chances are pretty good that you don't. The reality is far more likely that you've simply jumped to the conclusion that you have to reboot to "fix the problem". The fact that rebooting does "fix the problem" doesn't mean it's the actual solution. You've really not told us anything. You think there is some magic problem, and that rebooting will magically fix it. You need to be looking in your logs to see what messages are being sent there. Likely there is a really good clue somewhere in there. Until you can come up with real symptoms, nobody can provide a solution, because we don't know what's going on. Michael

Thank you very much for that tip. Doing a device reset (hdparm -w /dev/hdc) does fix the problem. The command echoed DMA disabled device reset And then I was to burn just as after a reboot. Would you also be able to point me towards where to look (such as log files) to try and identify what is causing this behaviour (i.e. the need to reset DVD burner after every burn). I do see error messages in /var/log/kern.log.0 such as Sep 22 16:39:24 chomsky kernel: hdc: status timeout: status=0xd0 { Busy} Sep 22 16:39:24 chomsky kernel: ide: failed opcode was: unknown Sep 22 16:39:24 chomsky kernel: hdc: drive not ready for command but am not sure what to make of it. Sincerely B Thomas Lasse Jensen <fafler@gmail.com> wrote: > Have you tried hdparm -w [device] to reset the drive? >

I posted a snippet of kern.log in response to another post in this thread. If you let me know which logs you would like me to post I would gladly do so. regards b thomas Michael <et472@FreeNet.Carleton.CA> wrote: > You need to be looking in your logs to see what messages > are being sent there. Likely there is a really good clue > somewhere in there. > > Until you can come up with real symptoms, nobody can > provide a solution, because we don't know what's going on. > > Michael

I don't have any other OS installed and haven't used them either. Unfortunately I don't have any other OS. I lost the disk a while ago. There seems to be no error in the disks burnt. I have no problem reading/ejecting and reading with the burner (/dev/hdc) The only other problem I have noticed is that sometimes on watching a DVD with the player (/dev/hdd) using Xine, the drive fails to eject after shutting down Xine. This happens if I try to eject by pressing the tray open button. However "eject /dev/hdd" as root does eject the disk. regards b thomas Lasse Jensen <fafler@gmail.com> wrote: > Have you tried to use the drive with any other operation systems? To me, it > sounds like a defective drive or bugged firmware. > > Do you use DMA while burning? Are the burned discs "good"? Can you > read/eject/read... discs in the drive? >

DMA is turned on by default after each boot. However the hdparm -w command disabled DMA and the last successful burn was done without using DMA. I am not aware of any command line switches to use DMA and hence don't use it. regards b thomas Lasse Jensen <fafler@gmail.com> wrote: > Do you use DMA while burning? Are the burned discs "good"? Can you > read/eject/read... discs in the drive? >

Lasse Jensen <fafler@gmail.com> wrote: > Have you tried to use the drive with any other operation systems? To me, it > sounds like a defective drive or bugged firmware. I have a CDR drive that does this from time to time. It hangs after I issue an eject command, and the disk does not eject. Annoyingly the drive seems to lose power, and the only way to reset it appears to be to reboot the computer. I think in the past I have physically plugged the power cable out of the back of the drive and plugged it back in again, but I don't like doing this when the computer is powered on. (It is an internal IDE drive.) ps -ef|grep eject root 9653 9652 0 Sep28 ? 00:00:00 eject /dev/cdrom kill -9 9653 (done as root) ps -ef|grep eject root 9653 9652 0 Sep28 ? 00:00:00 eject /dev/cdrom > Do you use DMA while burning? I don't know whether I do or not. I'll find out when I next burn a disk. > Are the burned discs "good"? Can you > read/eject/read... discs in the drive? My disks burn ok, and pass md5sum verification. Mark. -- Mark Hobley 393 Quinton Road West QUINTON Birmingham B32 1QE Email: markhobley at hotpop dot donottypethisbit com http://markhobley.yi.org/