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Bug 537647 - Resolution limited to 800x600: DDC responded but not EDID found
Summary: Resolution limited to 800x600: DDC responded but not EDID found
Keywords:
Status: CLOSED DUPLICATE of bug 533632
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-ati
Version: 12
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Jérôme Glisse
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: card_R200
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-11-15 13:02 UTC by Ondrej Zary
Modified: 2018-04-11 16:06 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-11-24 19:06:30 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)
dmesg (deleted)
2009-11-15 13:02 UTC, Ondrej Zary 		no flags Details
X log (deleted)
2009-11-15 13:03 UTC, Ondrej Zary 		no flags Details
X log without KMS (deleted)
2009-11-15 13:17 UTC, Ondrej Zary 		no flags Details
Xorg.0.log sucessful EDID detection with kms disabled (deleted)
2009-11-17 14:39 UTC, George 		no flags Details
dmesg kms enabled (deleted)
2009-11-17 14:51 UTC, George 		no flags Details
Xorg.0.log kms enabled (deleted)
2009-11-17 14:51 UTC, George 		no flags Details
/var/log/messages kms enabled (deleted)
2009-11-17 14:57 UTC, George 		no flags Details
dmesg kernel 2.6.31.6-134 - kms enabled (deleted)
2009-11-18 13:25 UTC, George 		no flags Details
Xorg.0.log kernel 2.6.31.6-134 - kms enabled (deleted)
2009-11-18 13:25 UTC, George 		no flags Details
dmesg kernel 2.6.31.6-134 - kms disabled (deleted)
2009-11-18 13:41 UTC, George 		no flags Details
Xorg.0.log kernel 2.6.31.6-134 - kms disabled (deleted)
2009-11-18 13:41 UTC, George 		no flags Details
View All

Description Ondrej Zary 2009-11-15 13:02:42 UTC 
Created attachment 369583 [details]
dmesg

Description of problem:
Fedora boots in 800x600 with Iiyama VisionMaster 405 17" monitor. dmesg contains "EDID invalid" and "DDC responded but not EDID found" errors.

Version-Release number of selected component (if applicable):
xorg-x11-drv-ati-6.13.0-0.10.20091006git457646d73.fc12.i686
xorg-x11-server-Xorg-1.7.1-7.fc12.i686

How reproducible:
Always

Steps to Reproduce:
1. Boot desktop-i386-20091111.16.iso live image
  
Actual results:
Default resolution is 800x600, xrandr shows only 640x480 and 800x600.

Expected results:
At least 1024x768 as default resolution.

Additional info:
Comment 1 Ondrej Zary 2009-11-15 13:03:45 UTC 
Created attachment 369584 [details]
X log
Comment 2 Ondrej Zary 2009-11-15 13:17:14 UTC 
Created attachment 369585 [details]
X log without KMS

With KMS disabled, Xorg has no problem with this EDID.
Comment 3 Bug Zapper 2009-11-16 15:32:59 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping
Comment 4 Matěj Cepl 2009-11-16 15:51:32 UTC 
*** Bug 537651 has been marked as a duplicate of this bug. ***
Comment 5 George 2009-11-17 14:29:12 UTC 
Experiencing the same bug on a ati RV570 [Radeon X1950 Pro] card. 
kernel 2.6.31.5-127.fc12.x86_64 (fedora 12 x64 live cd).

Disabling kms, Xorg has no problem with the EDID.

The monitor is a CRT 17", DataVision (detected as Kingston Tech Corporation 16" when kms is disabled, and detected as "unknown" with kms enabled) connected through a vga-to-dvi adapter
Comment 6 George 2009-11-17 14:39:46 UTC 
Created attachment 369891 [details]
Xorg.0.log sucessful EDID detection with kms disabled
Comment 7 George 2009-11-17 14:51:23 UTC 
Created attachment 369893 [details]
dmesg kms enabled
Comment 8 George 2009-11-17 14:51:56 UTC 
Created attachment 369894 [details]
Xorg.0.log kms enabled
Comment 9 George 2009-11-17 14:57:48 UTC 
Created attachment 369896 [details]
/var/log/messages kms enabled
Comment 10 Jérôme Glisse 2009-11-17 18:29:32 UTC 
Ondrej is the resolution properly detect with kms disabled ? if so please attach Xorg.log of such session.

George & Ondrej please test with the following kernel :
http://koji.fedoraproject.org/koji/buildinfo?buildID=141560
(download rpm which match your config, i686 or x86-64 and install it with rpm -ivh)
Comment 11 Jérôme Glisse 2009-11-17 18:30:39 UTC 
Forget to mention that this is a duplicate of :
https://bugzilla.redhat.com/show_bug.cgi?id=533632

I am waiting for you to provide more information before marking it has such.
Comment 12 Ondrej Zary 2009-11-17 20:43:02 UTC 
Yes, it works with KMS disabled - see comment #2.
Comment 13 George 2009-11-17 21:46:35 UTC 
[quote] Ondrej is the resolution properly detect with kms disabled ? if so please
attach Xorg.log of such session.[/quote]

There are no problems detecting EDID/getting correct resolutions with kms disabled, see Xorg.0.log from that session in comment #6   

Will test with the new kernel as soon as possible
Comment 14 George 2009-11-18 13:22:51 UTC 
Tested with kernel 2.6.31.6-134.fc12.i686 from the link you mentioned.
No joy on detecting EDID

Attached the dmesg and Xorg.0.log from the session on this new kernel
Comment 15 George 2009-11-18 13:25:00 UTC 
Created attachment 370077 [details]
dmesg kernel 2.6.31.6-134 - kms enabled
Comment 16 George 2009-11-18 13:25:50 UTC 
Created attachment 370078 [details]
Xorg.0.log kernel 2.6.31.6-134 - kms enabled
Comment 17 George 2009-11-18 13:41:18 UTC 
Created attachment 370085 [details]
dmesg kernel 2.6.31.6-134 - kms disabled
Comment 18 George 2009-11-18 13:41:52 UTC 
Created attachment 370086 [details]
Xorg.0.log kernel 2.6.31.6-134 - kms disabled
Comment 19 George 2009-11-24 16:12:34 UTC 
may be unrelated, but there was a similar case on fedora forums where a intel card user (Intel 82Q963/Q965 graphics) required "nomodesetting" parameter in order to get the corret resolutions. It may not be limited only to xorg-x11-drv-ati component.

The link in question:
http://fedoraforum.org/forum/showthread.php?p=1295637
Comment 20 Jérôme Glisse 2009-11-24 19:06:30 UTC 

*** This bug has been marked as a duplicate of bug 533632 ***
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