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f33e652
(Get the code!)
Hi Chris,
Thanks for gathering this additional info; I know it's a pain.
Yep, this does indeed look like another example of the infamous bug 3731. Looking at your xorg.conf file, Ubuntu seems to have detected your monitor, but failed to determine the h/v rates:
Section "Monitor"
Identifier "G90f+"
Option "DPMS"
EndSection
Then in the Xorg.0.log file, you see where it takes a wild guess:
(II) NV(0): G90f+: Using default hsync range of 31.50-37.90 kHz
(II) NV(0): G90f+: Using default vrefresh range of 50.00-70.00 Hz
Yet actually, looking up your monitor's documentation, the actual rates are very different:
www.viewsoniceu
Frequency: Fh: 30-97kHz; Fy: 50-180
Then in the Xorg.0.log file you can see a sadly long list of rejected resolutions because they're beyond what it thinks the allowed ranges are.
Unfortunately, a LOT of people run into this particular bug. It's because the installer relies on a tool called xresprobe, which has proven to be quite inadequate.
The good news is that if you can get through the installation process, then you can just manually edit your xorg.conf file to insert the correct values in. Namely:
Section "Monitor"
Identifier "G90f+"
Option "DPMS"
HorizSync 30-97
VertRefresh 50-180
EndSection
Of course, that won't help for getting it to boot off the LiveCD, and you're definitely right that this problem really must be fixed for Gutsy.
Canonical recognizes this is a problem and has taken several steps. First, they've hired a dedicated Xorg maintainer (me; I officially start day after tomorrow). Second, they've slated time to talk about how we're going to solve these issues at the upcoming developer summit in May. Third, they've made this and a couple other major X features be critical items for the Gutsy release. I'm a little apprehensive about if all these things can be achieved by then, but hopefully with help from community members like you, it can be done.
I'll drop a few more thoughts and ideas onto bug 3731, of ideas, things needing to be tested, etc. If you'd like to help make Ubuntu's X work robustly, I'd love it if you could join in the discussions and work on that bug.