Bug 5990

Summary:

Radeon driver problems when using external LCD panel on Dell Inspiron 6000

Product:

xorg

Reporter:

Joshua M. Thompson <funaho>

Component:

Driver/Radeon

Assignee:

Xorg Project Team <xorg-team>

Status:

RESOLVED FIXED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

normal

Priority:

high

Keywords:

regression

Version:

7.0.0

Hardware:

x86 (IA32)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
my xorg.conf file	none
Log file when booting on external display	none
Log file when booting on internal display	none

Description Joshua M. Thompson 2006-02-22 05:57:57 UTC

On my Dell Inspiron 6000, which has a built-in 1920x1200 display, I normally use
my notebook at home with the internal display and at work on an external 19" LCD
panel that does 1280x1024. I switch to the external panel before booting using
Fn+F8 and leave the notebook closed. In this configuration however the radeon
driver does not properly eliminate the 1920x1200 resolution from the mode list,
thus making the external monitor unusable until I hand-edit the xorg.conf file.
This makes it difficult to switch from using an external monitor at work and the
built-in display at home since I have to keep editing the config file (1280x1024
on the internal display is stretched and looks too bad for me to use.)

It appears the radeon driver is still using the specs for the internal display
even when set to use the external display. This was also broken in X.org 6.8 (ie
in FC4) but worked great for the first couple weeks I ran FC5 test 2, but a
subsequent update broke it again.

Comment 1 Joshua M. Thompson 2006-02-22 05:59:37 UTC

Created attachment 4704 [details]
my xorg.conf file

Comment 2 Joshua M. Thompson 2006-02-22 06:00:36 UTC

Created attachment 4705 [details]
Log file when booting on external display

Comment 3 Joshua M. Thompson 2006-02-22 06:00:46 UTC

Created attachment 4706 [details]
Log file when booting on internal display

Comment 4 Marius Gedminas 2006-03-14 19:30:11 UTC

Joshua: xrandr should let you switch between 1920x1200 and 1280x1024 without
having to edit xorg.conf and restart the X server.  (That's assuming both modes
are listed in your Screen section.)

Comment 5 Joshua M. Thompson 2006-03-15 03:17:04 UTC

I tried this approach at one point (leaving 1280x1024 as the initial mode and
making 1920x1200 available for switching to later) but what seemed to happen was
that X insisted on giving me a 1280x1024 resolution with a 1920x1200 virtual
desktop size.

Shouldn't 1920x1200 be eliminated from the mode list when a monitor that does
not support it is connected?

Comment 6 Timo Jyrinki 2007-02-25 05:04:08 UTC

Any updates on eg. Fedora Core 6 / Fedora 7 test1, or if you can compile and use the latest GIT version?

Comment 7 Daniel Stone 2007-02-27 01:30:35 UTC

Sorry about the phenomenal bug spam, guys.  Adding xorg-team@ to the QA contact so bugs don't get lost in future.

Comment 8 Alex Deucher 2007-08-31 07:21:23 UTC

this should be resolved with the new xrandr enabled driver in ati git master.  re-open if you still have issues.

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