Bug 63415 - Sony CRX140E cdrom must be marked "no dma", else kernel panic
Summary: Sony CRX140E cdrom must be marked "no dma", else kernel panic
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 7.2
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brian Brock
Depends On: 63413
TreeView+ depends on / blocked
Reported: 2002-04-13 14:08 UTC by Bryce Nesbitt
Modified: 2008-08-01 16:22 UTC (History)
0 users

Clone Of:
Last Closed: 2004-09-30 15:39:30 UTC

Attachments (Terms of Use)

Description Bryce Nesbitt 2002-04-13 14:08:43 UTC
This cdrom drive has defective DMA, leading to kernel panics.

I solve this with an /etc/sysconfig/harddiskhda file, and the
patch from Bug #63413.  The command line for a fix is:

hdparm -d0 -u0 -c0 /dev/hda
hdparm -i /dev/hda


 Model=SONY CD-RW CRX140E, FwRev=1.0n, SerialNo=
 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
 RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=0kB, MaxMultSect=0
 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
 IORDY=on/off, tPIO={min:180,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes: pio0 pio1 pio2 pio3 pio4 
 DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 udma0 udma1 *udma2 

Comment 1 Arjan van de Ven 2002-04-15 12:41:39 UTC
The plan is to disable dma for cdroms by default; due to the shere amount of
cdrom drives that get it wrong, combined with the effect ("hang")

Comment 2 Bryce Nesbitt 2002-04-24 01:30:45 UTC
Good move.

Comment 3 Bugzilla owner 2004-09-30 15:39:30 UTC
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/

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