On Wed, 2007-01-17 at 14:11 +0900, Tejun Heo wrote: > That's READ TOC. Does the problem happen if you boot into single mode > (no hald)? Can you access cd/dvd in single mode? OK, here's what I found out: 1) It's definitely hald that triggers the bug. Booting into a runlevel without a lot of services, and running compiles for almost 5 hours didn't show any negative symptoms. I did some small measure of cd access : mount/ls/unmount, and they also worked fine. 2) After googling for "TS-L632D" and "ac00" I found that there's a firmware update available for the drive. Google for TS-L632D and ac01 to find it: http://www.toshibaer.com/firmware/index.php?path=TS-L632D/ 3) As I was typing this email, the problem re-occured (with the newer firmware): ata1.01:exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen ata1.01:cmd a0/00:00:00:00:20/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 in res 40/00:03:00:00:00/00:00:00:00:00/b0 Emask 0x4 (timeout) ata1: port is slow to respond, please be patient (Status 0xd0) ata1: port failed to respond (30 secs, Status 0xd0) ata1: soft resetting port I have found a few URLS of forums and bugreports where the users claim that keeping a CD in sometimes works, or booting off a CD, etc. The DVD seems to zap the controller good when it does hit, though... TS-L632D ac01 seems to be the correct incantation for Google. If it's a firmware bug and implementing a workaround in hald helps it, would other userspace apps (k3b, cdrecord, etc.) also be affected? JAn - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html