"Set VBE Mode failed!" - Monitor issue
Nolan Check
nolancheck at hotmail.com
Fri Apr 20 17:28:00 PDT 2007
I posted this issue on the Ubuntu Forums at this address:
http://ubuntuforums.org/showthread.php?t=414357
It seems unlikely to be answered or even noticed.
I think it's an issue with X.Org. Here is what I posted:
[[[[[[[[[[[[
I'm trying to use Ubuntu 7.04 Desktop AMD64. I have not installed it.
When I try to Start or Install Ubuntu From CD, the X server fails. The error
message I got is something like "VESA(0): Set VBE mode failed."
Starting Ubuntu in safe graphics mode fails with the same error.
Here is my hardware (I'll provide more details if someone needs to know):
- Processor: Core 2 Duo E6300
- Motherboard: Intel D975XBX
- Graphics card: ATI Radeon X1900 XT (this card is not compatible with the
open source ati driver.)
- Monitor: ViewSonic VG2230wm (native resolution: 1680x1050, 60 Hz)
I did my own investigation, and I think the problem is with the monitor.
Before I upgraded to the VG2230wm, I had a very old Sony Multiscan200sx, and
Ubuntu booted fine there. But, with the VG2230wm, X.Org seems to detect some
strange screen modes, like 1600x1200 and 1920x1440; several modes had
resolutions greater than native. I think it's trying to use a bad screen
mode for the graphical environment.
I also had this problem with Kubuntu 6.10 Desktop AMD64. Kubuntu takes me to
a shell when X server fails, which allows me to edit /etc/X11/xorg.conf. I
was able to get X working by editing xorg.conf to take out every screen
resolution entry except something I know my monitor supports, like
1280x1024, then using the command startx. With regular Ubuntu, I do not get
a shell, which makes it impossible to use.
Feature Request: I would like to be able to choose a screen resolution to
use for X.Org when booting Ubuntu from the disc.
Since it is probably an issue with X.Org, should I try to contact them?
]]]]]]]]]]
Basically, X.Org is detecting incorrect screen resolutions for my monitor
(resolutions greater than 1680x1050). Deleting these resolutions from
xorg.conf makes it work. However, editing xorg.conf is not always an option
on a LiveCD.
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