Messages in this thread | | | From | "Khimenko Victor" <> | Date | Tue, 25 Jan 2000 07:31:01 +0300 (MSK) | Subject | Re: 2.2.14 ATAPI CDROM crash on mount |
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In <388CE045.1A7AE1B9@gmx.de> Joachim Weller (joachim_weller@gmx.de) wrote: > Hi,
> I upgraded from 2.2.10 to 2.2.14 (2x686 SMP) and encountered a > tremendous ISDN performance increase ! Congratulations ! > But, when mounting an ATAPI cdrom, the system crashes instantly without > leaving > any messages (/var/log/messages) or any error msg. on screen > (even when mounting manually with -v). > The first kernel I built, had ATAPI cdrom support compiled in, > but stopped booting after: > ---------------------------------- > hdc: HITACHI CDR-8130, ATAPI CDROM drive > ide1 at 0x170-0x177,0x376 on irq 15 > ----------------------------------
> Normally (kernel 2.2.10) continues with the lines: > --------------------------------- > hdc: ATAPI 16X CD-ROM drive, 128kB Cache > Uniform CDROM driver Revision 2.55 > ---------------------------------
> I tried compiling ATAPI cdrom as moule and the kernel boots and runs > stable, > as long as I do not attempt to mount the cdrom. > I even could just modprobe the cdrom.o module and load it flawlessly. > But when issuing a mount of the cdrom, the system instantly freezes. > The doc of 2.2.14 and a comparision of cdrom.c (2.55) of kernel 2.2.10 > with > cdrom (2.56) of 2.2.14 did not reveal any indication of changes with > potential risks, > and compiling the 2.2.10 version - as expected - did not cure the > problem. > Now I have no glue how to trace the problem further down, but I would > love to keep > the outstanding ISDN performance of 2.2.14.
Try to do 'hdparm -d 0 /dev/hdc' before mount attempt. Some CD-ROM's do work work 100% correctly with DMA. Though here (where I have such problem) it'll lock 2.2.10 as well.
> Help very much appreciated,
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