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Stefan Schulze Frielinghaus 03-09-2010 01:43 PM

X.org on F13 Alpha and monitor setup
 
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

Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"

# keyboard added by system-config-display
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "de"
Option "XkbVariant" "nodeadkeys"
EndSection

Section "Monitor"
Identifier "Monitor0"
ModelName "Eizo L568"
HorizSync 24.0 - 80.0
VertRefresh 50.0 - 75.0
Option "dpms"
Modeline "1280x1024R" 90.75 1280 1328 1360 1440 1024 1027 1034 1054 +hsync -vsync
EndSection

Section "Device"
Identifier "Videocard0"
Driver "radeon"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024R"
EndSubSection
EndSection

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Adam Williamson 03-09-2010 02:45 PM

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
--
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Fedora Talk: adamwill AT fedoraproject DOT org
http://www.happyassassin.net

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Adam Jackson 03-09-2010 03:12 PM

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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Stefan Schulze Frielinghaus 03-09-2010 04:31 PM

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:

https://bugzilla.redhat.com/show_bug.cgi?id=571850

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Adam Williamson 03-09-2010 04:44 PM

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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Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Fedora Talk: adamwill AT fedoraproject DOT org
http://www.happyassassin.net

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