Bug 143524

Summary: Bad screen resolution when KDM is launched while the Monitor is switched off
Product: [Unmaintained] kdm Reporter: 16aR <amiral.16ar+kdebugs>
Component: generalAssignee: kdm bugs tracker <kdm-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal    
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description 16aR 2007-03-27 22:48:34 UTC 
Version:            (using KDE KDE 3.5.6)
Installed from:    Ubuntu Packages
Compiler:          gcc 4.1.2 
OS:                Linux

I've remarked something about 2 years before on my Debian testing.

When I boot, my monitor (a Iiyama 19' vision master 1451) is switched off. When I switch it on, the resolution of the screen server is bad. (about 800x600, or so.). There is no way to change it (with CTRL + ALT + + or -), this is the max resolution. I must restart the X server to have the right resolution (Xfree86-4, the first time I remarked it).

I thought it was because of my drivers (fglrx, for a radeon9800), but since I changed my video card this week end, I can tell you that is the same on nVidia card with official nvidia drivers.
I don't remember if it does the same on AiGLX with free radeon drivers but I think there wasn't the problem.

It could be interpreted as some X.org problems. But the fact is that with gdm, I didn't have any problems like these (with fglrx driver, at least).
Comment 1 Oswald Buddenhagen 2007-03-27 23:01:16 UTC 
it sort of is about the drivers ... but the generic ones. the X server gets the max possible resolution from the the monitor (via DDC) and uses it. why the server chooses not to do this with gdm is another question - maybe the server command line is different (just try ps x). in any case a configuration problem is most probable.