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Bug 163312 - Resolution of external video from laptop fixed at 800x600
Summary: Resolution of external video from laptop fixed at 800x600
Status: CLOSED DUPLICATE of bug 162733
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11
Version: 4
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: X/OpenGL Maintenance List
QA Contact: David Lawrence
Depends On:
TreeView+ depends on / blocked
Reported: 2005-07-15 00:09 UTC by Graham freeman
Modified: 2007-11-30 22:11 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2005-08-26 10:07:47 UTC

Attachments (Terms of Use)

Description Graham freeman 2005-07-15 00:09:28 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040913

Description of problem:
I need to use my laptop with external data projection facilities.  Under an old RedHat system with XFree86, I had no trouble, even if the screen resolution was 1600x1200.  With FC2 and FC4, the resolution I am using on the local screen is 1280x1024.  Only an 800x600 piece of the area gets projected through the video connection.

I have tried this in 3 venues.  With a small portable data projector, I have no problem; the full 1280x1024 is projected.  In the other venues (large halls with fixed facilities), I only get the 800x600 displayed.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Connect and turn on the data projector.
2. Boot the computer

Actual Results:  800x600 portion of the screen display is projected.  If I move the mouse, the displayed area always tracks the cursor.

Expected Results:  The projected screen should match the screen on the local laptop.

Additional info:

The laptop I am using is an IBM ThinkPad.

Comment 1 Graham freeman 2005-07-15 00:24:12 UTC
I have installed XFree86 to try to replicate the success I had under the old
RedHat system, and the latest version exhibits the same problem as xorg.

I have experimented with various possibilities and have come up with a setting
which solves the problem.  Hand editing the XF86Config file so that it has the
following lines gives the desired higher resolution output. 

Section "Device"
	Identifier  "Card0"
#	Driver      "ati"
	Driver      "radeon"
	Option      "MonitorLayout"  "LVDS, SVGA"
	VendorName  "ATI Technologies Inc"
	BoardName   "Radeon RV200 LX [Mobility FireGL 7800 M7]"
	BusID       "PCI:1:0:0"

I have not reverted to xorg to verify that the same solution will work there, as
I now have a production system that I can use tomorrow when I need it.

Comment 2 Walter Justen 2005-08-26 10:07:47 UTC
Thanks for the bug report. This particular bug has already been reported
into our bug tracking system, but please feel free to report any further
bugs you find.

*** This bug has been marked as a duplicate of 162733 ***

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