Today I wanted to give F13 Alpha a test and installed it. The
installation went fine but I do not get a proper screen resolution
setup. The basic setup was done via system-config-display, I only added
a modeline. But it seems to me that the modeline is ignored. Is this a
new behavior because of kernel based mode setting or is this a bug and I
should file a report? At the moment the screen resolution is 1024x768
but I expected 1280x1024. Can someone confirm this behavior?
I'm wondering because before F10 was installed, and I even did not need
to setup a modeline. Everything was automatically configured by X.org.
cheers,
Stefan
PS: It was a fresh install.
# Xorg configuration created by system-config-display
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03-09-2010, 02:45 PM
Adam Williamson
X.org on F13 Alpha and monitor setup
On Tue, 2010-03-09 at 15:43 +0100, Stefan Schulze Frielinghaus wrote:
> Today I wanted to give F13 Alpha a test and installed it. The
> installation went fine but I do not get a proper screen resolution
> setup. The basic setup was done via system-config-display, I only added
> a modeline. But it seems to me that the modeline is ignored. Is this a
> new behavior because of kernel based mode setting or is this a bug and I
> should file a report? At the moment the screen resolution is 1024x768
> but I expected 1280x1024. Can someone confirm this behavior?
Can you check /var/log/Xorg.0.log , and see what that says?
> I'm wondering because before F10 was installed, and I even did not need
> to setup a modeline. Everything was automatically configured by X.org.
If your monitor is actually capable of 1280x1024 (*properly* capable -
if it's an LCD whose native resolution is 1024x768, this behaviour is
not a bug, it's correct), then it's certainly a bug for X not to detect
this, and you should file it:
https://fedoraproject.org/wiki/How_to_debug_Xorg_problems
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03-09-2010, 03:12 PM
Adam Jackson
X.org on F13 Alpha and monitor setup
On Tue, 2010-03-09 at 07:45 -0800, Adam Williamson wrote:
> On Tue, 2010-03-09 at 15:43 +0100, Stefan Schulze Frielinghaus wrote:
> > I'm wondering because before F10 was installed, and I even did not need
> > to setup a modeline. Everything was automatically configured by X.org.
>
> If your monitor is actually capable of 1280x1024 (*properly* capable -
> if it's an LCD whose native resolution is 1024x768, this behaviour is
> not a bug, it's correct), then it's certainly a bug for X not to detect
> this, and you should file it:
I'm guessing from his xorg.conf that he has an Ezio L568, which is
1280x1024. But we really should be parsing that from EDID correctly.
- ajax
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03-09-2010, 04:31 PM
Stefan Schulze Frielinghaus
X.org on F13 Alpha and monitor setup
On Di, 2010-03-09 at 07:45 -0800, Adam Williamson wrote:
> On Tue, 2010-03-09 at 15:43 +0100, Stefan Schulze Frielinghaus wrote:
> > Today I wanted to give F13 Alpha a test and installed it. The
> > installation went fine but I do not get a proper screen resolution
> > setup. The basic setup was done via system-config-display, I only added
> > a modeline. But it seems to me that the modeline is ignored. Is this a
> > new behavior because of kernel based mode setting or is this a bug and I
> > should file a report? At the moment the screen resolution is 1024x768
> > but I expected 1280x1024. Can someone confirm this behavior?
>
> Can you check /var/log/Xorg.0.log , and see what that says?
>
> > I'm wondering because before F10 was installed, and I even did not need
> > to setup a modeline. Everything was automatically configured by X.org.
>
> If your monitor is actually capable of 1280x1024 (*properly* capable -
> if it's an LCD whose native resolution is 1024x768, this behaviour is
> not a bug, it's correct), then it's certainly a bug for X not to detect
> this, and you should file it:
>
> https://fedoraproject.org/wiki/How_to_debug_Xorg_problems
The native resolution of the monitor is 1280x1024, so no problem here. I
did another test and removed the /etc/X11/xorg.conf. When I'm using the
DVI port, then the resolution is correctly adjusted to 1280x1024 even by
KMS during boot time. But when I use the analog port, then the screen is
detected as max resolution 1024x768. Disabling KMS via nomodeset did not
help. I guess this is really a bug and opened one. For references:
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03-09-2010, 04:44 PM
Adam Williamson
X.org on F13 Alpha and monitor setup
On Tue, 2010-03-09 at 18:31 +0100, Stefan Schulze Frielinghaus wrote:
> > If your monitor is actually capable of 1280x1024 (*properly* capable -
> > if it's an LCD whose native resolution is 1024x768, this behaviour is
> > not a bug, it's correct), then it's certainly a bug for X not to detect
> > this, and you should file it:
> >
> > https://fedoraproject.org/wiki/How_to_debug_Xorg_problems
>
> The native resolution of the monitor is 1280x1024, so no problem here. I
> did another test and removed the /etc/X11/xorg.conf. When I'm using the
> DVI port, then the resolution is correctly adjusted to 1280x1024 even by
> KMS during boot time. But when I use the analog port, then the screen is
> detected as max resolution 1024x768. Disabling KMS via nomodeset did not
> help. I guess this is really a bug and opened one. For references:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=571850
Yup, sounds like a bug alright. Thanks for filing.
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X.org on F13 Alpha and monitor setup
