On Sat, Sep 30, 2006 at 03:00:10PM +0100, Jeremy Henty wrote:
>
> I'm trying to upgrade 2.6.17.13 -> 2.6.18 . Under the new kernel X
> windows starts in 640x480 rather than 1280x1024 , which is pretty
> useless. Worse, I can't Ctrl-Atl-[+-] to the resolution I want. I
> need to fix this if I'm to use 2.6.18 but I can't figure out how.
>
I _normally_ see that with X-7.1, although occasionally it does
work. Personally, I've got used to it (set the correct resolution
in xorg.conf, and leave it at that).
> I've compared the server output from a minimal session (start X, quit
> applications, quit window manager) and the results are identical apart
> from the record of the time and OS version, and the startup message
> from icewm appearing in a different place (which I'm putting down to
> random timing variation). The diff of the output of xdpyinfo is:
>
> 58,59c58,59
> < dimensions: 1280x1024 pixels (361x271 millimeters)
> < resolution: 90x96 dots per inch
> ---
> > dimensions: 640x480 pixels (217x163 millimeters)
> > resolution: 75x75 dots per inch
>
Maybe, something in the kernel config has changed, so that it fails
to talk to the monitor properly.
As Shawn said, you really want an entry for your preferred screen
size (pixels, and depth) in xorg.conf. On this box I have
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 16
SubSection "Display"
Depth 16
Modes "1600x1200" "1280x1024" "1024x768" "800x600"
EndSubSection
EndSection
Obviously, put the desired Mode first, and don't include any that
your monitor can't handle.
If that doesn't help, rediff the kernel configs using diff -u (so
that it's easier to read) _without_ the sort : config options aren't
in alphabetical order. Possibly, something under Graphics support
got munged (e.g. CONFIG_FB_RADEON_I2C), or else I2C support itself.
Mostly, it's easier to look at the running config from
/proc/config.gz in e.g. 'view' to see how the differences in the
diff fit in.
Ken
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