Bug 257904 – ASrock P4I45GV R5.0 AGI-videocard problem: Linux panics at boot, unable to found root.

• Product: Gentoo Linux
• Status: RESOLVED NEEDINFO

[Description Ion 2009-02-06 15:00:30 UTC]

I have a ASrock P4I45GV R 5.0 mainboard. It has instead of a normal AGP slot a so-called "AGI", which is, as much as I understand, some kind of an AGP emulation on a PCI slot. So, i've had some problems with Linux, meaning that I should compile the kernel and turn off from there the APIC option.
I usually did like this: I changed from BIOS the videocard from AGI to internal one, booted the installed linux with it, compiled a new kernel and after that booted using the AGP-standart videocard.
But, in Gentoo, this doesn't work. During kernel compilation i get a message that the root filesystem is (3,1). And when i boot it, even if in grub.conf is specified the root=/dev/hda1 line, it boots from there. 
But i found a work-around: I installed Debian, booted from it, compiled the vanilla 2-6-28-2 kernel from it, copied it, the System.map and modules to their places, and it works, but only for the included videocard

Reproducible: Always

Steps to Reproduce:
1.On a ASROCK P4I45GV mainboard, compile the kernel
2.Boot from it.
3.

Actual Results:  
List of all partititions:
 0300  78184008  hda driver:ide-disk
  0301  5735173  hda1
  0302        1  hda2
 0340   811446   hdb driver: ide-cdrom

No filesystem could mount root, tried: reiserfs ext3 ext2 cramfs msdos vfat iso9660

Kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(3,1).

Expected Results:  
it should have booted the system

[Comment 1 Ion 2009-02-06 15:01:47 UTC]

Created attachment 181158 [details]
my grub.conf

[Comment 2 Ion 2009-02-06 15:02:12 UTC]

Created attachment 181159 [details]
fstab

[Comment 3 Ion 2009-02-06 15:03:19 UTC]

Created attachment 181162 [details]
The config of the kernel I created from Debian

[Comment 4 Jeroen Roovers (RETIRED) 2009-02-07 17:37:04 UTC]

Please explain how this bug report can improve Gentoo Linux.

[Comment 5 Ion 2009-02-07 19:30:30 UTC]

(In reply to comment #4)
> Please explain how this bug report can improve Gentoo Linux.
> 

Well, I think that this bug is tied to some recent changes made in Gentoo environment. Thet's because in Debian the kernel booted with the AGP videocard, but under Gentoo it works only with the included one. 
In fact, it wouldn't bring Gentoo nothing, except the possibility to discover some new bugs in it. I'm not an IT professional, so that I could tell you what is wrong with it. But a month ago, Gentoo worked fine with my card. Now it doesn't. 

[Comment 6 Jeroen Roovers (RETIRED) 2009-02-09 04:49:27 UTC]

Sorry, that's not enough. Please reopen this bug report after you have added full details, maybe a reference to an upstream bug report, some error messages and so on.