Bug 1314 - 1024x768 and 800x600 displayed in 1280x1024@60 mode on iiyama monitor unless "CRT" forced via MonitorLayout option
Summary: 1024x768 and 800x600 displayed in 1280x1024@60 mode on iiyama monitor unless ...
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: 6.8.0
Hardware: x86 (IA32) Linux (All)
: high normal
Assignee: Xorg Project Team
QA Contact:
Depends on:
Reported: 2004-09-08 23:30 UTC by Daniil Bratashov
Modified: 2006-04-16 03:51 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

xorg.conf (3.41 KB, text/plain)
2004-09-08 23:31 UTC, Daniil Bratashov
no flags Details
Jeff's config file (3.54 KB, text/plain)
2004-11-14 13:20 UTC, Jeffrey Drake
no flags Details
Jeff's log file (31.10 KB, text/plain)
2004-11-14 13:20 UTC, Jeffrey Drake
no flags Details

Description Daniil Bratashov 2004-09-08 23:30:26 UTC
When I try to set videomode to 1024x768 or 800x600, real videomode doesn't 
changes and is 1280x1024@60Hz. Screen shows at right upper part of display with 
nesessary size 1024x768 or 800x600 pixels.

System: iiyama vision master pro 1413 (LM704UT A)
&& Radeon 7200.
Xorg 6.8.0rc2 on Slackware Linux 10.0

this bug appear in 6.8.0 and don't present in 6.7.0.
xorg.conf attached
Comment 1 Daniil Bratashov 2004-09-08 23:31:13 UTC
Created attachment 840 [details]
Comment 2 Daniil Bratashov 2004-09-21 00:25:57 UTC
IMHO this is problem in ati driver (when I try to change it to vesa all work 
fine). I think, my CRT monitor accidentally detected as LCD, so this line in 
config forces Xorg to work properly:
        Option     "MonitorLayout" "NONE,CRT"
Comment 3 Jeffrey Drake 2004-11-14 13:19:14 UTC
I have experienced what I believe is the same bug with my radeon 7200 and an NEC 17" CRT monitor. 
The proposed fix does not do anything. Not using DDC information does nothing except allow 640x480 
to work. Problem exists on 6.8.1. (netbsd ports)

From the log:

II) RADEON(0): Validating modes on Primary head ---------
(II) RADEON(0): Panel size found from DDC: 1600x1200
(II) RADEON(0): Valid Mode from Detailed timing table: 1600x1200
(II) RADEON(0): Valid Mode from standard timing table: 640x480
(II) RADEON(0): Total of 2 mode(s) found.
(II) RADEON(0): Total number of valid DDC mode(s) found: 2
(--) RADEON(0): Virtual size is 640x480 (pitch 640)
(**) RADEON(0): *Default mode "640x480": 175.5 MHz (scaled from 0.0 MHz), 81.2 kHz, 65.0 Hz
(II) RADEON(0): Modeline "640x480"  175.50  640 1664 1856 2160  480 1201 1204 1250 -hsync 
(--) RADEON(0): Display dimensions: (320, 240) mm

I am also going to attach full log and config.
Comment 4 Jeffrey Drake 2004-11-14 13:20:28 UTC
Created attachment 1306 [details]
Jeff's config file
Comment 5 Jeffrey Drake 2004-11-14 13:20:53 UTC
Created attachment 1307 [details]
Jeff's log file
Comment 6 Erik Andren 2006-03-28 17:13:07 UTC
Whats the status of this bug as of current? 
Does it work with a current release of xorg/xf86-video-ati?
Comment 7 Erik Andren 2006-04-16 20:51:21 UTC
I'm closing this bug due to the lack of activity. Please reopen if the issue
still persists and is reproduceable.

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