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Tasklist

FS#3797 - dbus system freeze after cd insert (scsi)

Attached to Project: Arch Linux
Opened by Moo-Crumpus (Moo-Crumpus) - Thursday, 19 January 2006, 07:47 GMT
Last edited by arjan timmerman (blaasvis) - Thursday, 19 January 2006, 13:16 GMT
Task Type Bug Report
Category System
Status Closed
Assigned To Jan de Groot (JGC)
Architecture not specified
Severity Critical
Priority Normal
Reported Version 0.7.1 Noodle
Due in Version Undecided
Due Date 2006-01-20
Percent Complete 100%
Votes 0
Private No

Details

I have a system with scsi / sata disks, one scsi dvd and one sata dvd recorder. I use gnome. If dbus is running, I recognize several issues:

- any cd/dvd inserted into the sata dvd recorder is mounted as an empty dvdr disk - wether it is one ore not.
- any cd/dvd inserted into the scsi dvd drive freezes the system in between 3 seconds.

If dbus is not running, I can manually mount the disks without any problems.

I know this is a very thin description of the issue. I tried several things, without more success then find dbus might be the freezer. After the system has been freezed several times, the whole installation is buggy and broken, the fs is corrupt etc. I reinstall arch, and try to find out the next puzzle piece.
To find out what really happens and solve the bug, I need some advice. How can I log the behaviour in a helpfull way?
This task depends upon

Closed by  arjan timmerman (blaasvis)
Monday, 20 March 2006, 17:33 GMT
Reason for closing:  Not a bug
Additional comments about closing:  as requested.
Comment by Jan de Groot (JGC) - Thursday, 19 January 2006, 14:59 GMT
It's not dbus causing this, but hal. I guess hal scans your DVD recorders in a way it doesn't like: either a kernel bug or a hardware bug... HAL is known to have workarounds for some broken CD or DVD drives. We haven't updated hal to 0.5.6 yet, but I guess this will fix quite some problems.
Comment by Jan de Groot (JGC) - Thursday, 26 January 2006, 22:11 GMT
How is hal 0.5.6 acting up in this story? Does it fix your bugs?
Comment by Moo-Crumpus (Moo-Crumpus) - Friday, 27 January 2006, 19:52 GMT
It fails if I start dbus and hal in that order as seperated daemons, what is quite surprising to me. /etc/rc.d/hal does just check for dbus, and then starts it. But I had no pc freezes so far.
It seems to work if I only start hal as a daemon. It starts dbus then. I will try it out with several discs and reboots, and tell you about it. Right now I am a bit confused and need more tests. Maybe restarting dbus & hal while in gnome confuses gnome, 2.
Comment by Moo-Crumpus (Moo-Crumpus) - Friday, 27 January 2006, 20:04 GMT
More confusion. It was OK for three trials. After that, and some more restarting dbus & hal, I had a hardware freeze after inserting a cd into the scsi device. Since then I tried four more times with fresh reboots, and the system hangs seconds later. Discs inserted in the sata will be opened as they where empty dvd rw's. No, my bugs are still doing very fine.

Comment by Jan de Groot (JGC) - Friday, 27 January 2006, 20:23 GMT
I guess these are kernel bugs for SATA DVD and CD drives. Hal only probes these things to find out what type of disc is inserted in them. Not only does it return the wrong disktype, but it also hangs your complete system after a few probes.
Comment by Moo-Crumpus (Moo-Crumpus) - Saturday, 28 January 2006, 16:34 GMT
How could inserting a cd into the scsi device hang the system if it was a sata bug? But a hint might be that I have this problems after adding sata devices to my pure scsi system. I will wait for new kernel releases, and if one could give me advice how to log this bug, it'ld be great.
Comment by arjan timmerman (blaasvis) - Sunday, 19 March 2006, 15:50 GMT
could you try the new dbus + hal in testing ?
Comment by Moo-Crumpus (Moo-Crumpus) - Monday, 20 March 2006, 17:24 GMT
I tried, and it broke my gnome installation, as something like libdbus / dbus-sharp was missing. Furthermore, I installed windows just to find out how it behaves - well, it locked my system, too. So it might be a hardware issue, related with some driver stuff in windows and linux. I just read in the kernel log that the new kernel includes several bugfixes related to the sata chipset I own (sata sil 3112).

In the sum, I am now sure it is no archlinux / dbus / hal bug. Maybe the new kernel, dbus and hal will offer a way to bypass those bugs. Feel free to close this bug report.

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