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Bug#493244: booting vmlinuz-2.6.25-2-686 w. vga=791 gets "undefined video mode"



Package: installation-reports

Boot method: CD
Image version: http://cdimage.debian.org/cdimage/daily-builds/sid_d-i/arch-latest/i386/iso-cd/debian-testing-i386-netinst.iso
Date: Fri. Aug 1 2008 6:00:00 CDT

Machine: homebuilt PC
Processor:AMD Athlon 2700+
Memory:1 GB
Partitions: /hdb5/bootFri Aug 01-09:37:45HDC3# df -Tl
Filesystem Type 1K-blocks Used Available Use% Mounted on
/dev/hdc3 ext2 7692908 4683604 2618524 65% /
tmpfs tmpfs 452888 0 452888 0% /lib/init/rw
udev tmpfs 10240 240 10000 3% /dev
tmpfs tmpfs 452888 0 452888 0% /dev/shm
/dev/hda10 ext2 29362324 12654692 15216072 46% /hda10
/dev/sdb1 ext2 7692876 1635420 5666680 23% /sdb1
/dev/hdc5 ext2 7692876 261848 7040252 4% /hdb5

Output of lspci -knn (or lspci -nn):
/hdb5/bootFri Aug 01-09:38:32HDC3# lspci -knn
00:00.0 Host bridge [0600]: VIA Technologies, Inc. KT880 Host Bridge [1106:0269]
Kernel driver in use: agpgart-via
00:00.1 Host bridge [0600]: VIA Technologies, Inc. KT880 Host Bridge [1106:1269]
00:00.2 Host bridge [0600]: VIA Technologies, Inc. KT880 Host Bridge [1106:2269]
00:00.3 Host bridge [0600]: VIA Technologies, Inc. KT880 Host Bridge [1106:3269]
00:00.4 Host bridge [0600]: VIA Technologies, Inc. KT880 Host Bridge [1106:4269]
00:00.7 Host bridge [0600]: VIA Technologies, Inc. KT880 Host Bridge [1106:7269]
00:01.0 PCI bridge [0604]: VIA Technologies, Inc. VT8237 PCI Bridge [1106:b198]
00:0a.0 Multimedia audio controller [0401]: Creative Labs SB Audigy LS [1102:0007]
Kernel driver in use: CA0106
Kernel modules: snd-ca0106
00:0f.0 IDE interface [0101]: VIA Technologies, Inc. VIA VT6420 SATA RAID Controller [1106:3149] (rev 80)
00:0f.1 IDE interface [0101]: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE [1106:0571] (rev 06)
Kernel driver in use: VIA_IDE
00:10.0 USB Controller [0c03]: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller [1106:3038] (rev 81)
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
00:10.1 USB Controller [0c03]: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller [1106:3038] (rev 81)
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
00:10.2 USB Controller [0c03]: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller [1106:3038] (rev 81)
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
00:10.3 USB Controller [0c03]: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller [1106:3038] (rev 81)
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
00:10.4 USB Controller [0c03]: VIA Technologies, Inc. USB 2.0 [1106:3104] (rev 86)
Kernel driver in use: ehci_hcd
Kernel modules: ehci-hcd
00:11.0 ISA bridge [0601]: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South] [1106:3227]
Kernel modules: i2c-viapro
00:11.5 Multimedia audio controller [0401]: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller [1106:3059] (rev 60)
Kernel driver in use: VIA 82xx Audio
Kernel modules: snd-via82xx
00:12.0 Ethernet controller [0200]: VIA Technologies, Inc. VT6102 [Rhine-II] [1106:3065] (rev 78)
Kernel driver in use: via-rhine
Kernel modules: via-rhine
01:00.0 VGA compatible controller [0300]: nVidia Corporation NV18 [GeForce4 MX 4000] [10de:0185] (rev c1)
Kernel driver in use: nvidia
Kernel modules: nvidia

Base System Installation Checklist:
[O] = OK, [E] = Error (please elaborate below), [ ] = didn't try it

Initial boot: [o ]
Detect network card: [o ]
Configure network: [o ]
Detect CD: [o ]
Load installer modules: [o ]
Detect hard drives: [o ]
Partition hard drives: [o ]
Install base system: [o ]
Clock/timezone setup: [e ]
User/password setup: [o ]
Install tasks: [o ]
Install boot loader: [o ]
Overall install: [o ]

Comments/Problems:

1. Although I specified "localtime" the clock got set to "UTC"
2. Booting kernel vmlinuz-2.6.25-2-686 and specifying vga=791 gets "undefined video mode"

There is something funny going on with the post 2.6.24 Debian kernels.
Specifying vga=791, which works 2.6.24 and before, no longer works.
I have submitted a bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=481063

I can specify vga=791 with kernels 2.6.25 + 2.6.26 from kernel.org. I cannot with the Debian kernel images post 2.6.24.
AFAIK it must be a Debian problem then.

Hugo Vanwoerkom








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