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Bug 231661 - intel modesetting driver produces "melting screen" effect on laptop LVDS
intel modesetting driver produces "melting screen" effect on laptop LVDS
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-i810 (Show other bugs)
i386 Linux
medium Severity medium
: ---
: ---
Assigned To: Adam Jackson
: Patch
Depends On:
  Show dependency treegraph
Reported: 2007-03-09 16:08 EST by Joe Ammond
Modified: 2018-04-11 05:12 EDT (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2007-04-02 17:18:55 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Xorg.0.log from the 'intel' driver (82.52 KB, application/octet-stream)
2007-03-09 16:09 EST, Joe Ammond
no flags Details
Xorg.0.log from the 'i810' driver (77.43 KB, application/octet-stream)
2007-03-09 16:11 EST, Joe Ammond
no flags Details
xorg.conf (801 bytes, application/octet-stream)
2007-03-09 16:12 EST, Joe Ammond
no flags Details
"screenshot" of the problem (120.65 KB, image/jpeg)
2007-03-14 10:19 EDT, Joe Ammond
no flags Details
A patch to i830_display.c (413 bytes, text/x-patch)
2007-03-23 18:01 EDT, Joe Ammond
no flags Details
log from a working driver (69.18 KB, application/octet-stream)
2007-03-23 18:02 EDT, Joe Ammond
no flags Details
Working Xorg.0.log (106.32 KB, text/plain)
2007-03-31 15:49 EDT, Joe Ammond
no flags Details

External Trackers
Tracker ID Priority Status Summary Last Updated
FreeDesktop.org 9076 None None None Never

  None (edit)
Description Joe Ammond 2007-03-09 16:08:19 EST
Description of problem:
The intel modesetting driver doesn't work on my HP NC6320. When I switch to the
intel driver and restart X, the LVDS takes on a greenish-melting effect that I
can't adequately describe. The external HP 1730 flat panel comes up in the
correct resolution. No amount of 'xrandr' will get the LVDS to display properly.
I'll snap a picture of the display tonight with my digital camera and attach.

Hardware config is:
HP NC6320
T7400 Core2 Duo CPU
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS/940GML
Express Integrated Graphics Controller (rev 03)

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

How reproducible:
Every time.

Steps to Reproduce:
1. Install FC6T2 on an NC6320
2. Change "i810" to "intel" in /etc/X11/xorg.conf, restart X
Actual results:
"Melting" screen effect.

Expected results:
Working X display.

Additional info:
Comment 1 Joe Ammond 2007-03-09 16:09:34 EST
Created attachment 149736 [details]
Xorg.0.log from the 'intel' driver

Log from the 'intel' driver.
Comment 2 Joe Ammond 2007-03-09 16:11:54 EST
Created attachment 149737 [details]
Xorg.0.log from the 'i810' driver

Xorg.0.log from the 'i810' driver. I do have to use '915resolution' to get X to
display at 1400x1050 (I know, it's an evil hack).
Comment 3 Joe Ammond 2007-03-09 16:12:18 EST
Created attachment 149738 [details]
Comment 4 Joe Ammond 2007-03-09 16:13:16 EST
One comment I forgot to add: to get the panel's native resolution (1400x1050), I
have to use the evil 915resolution hack. I did disable it when I tried the intel
driver, tho.
Comment 5 Joe Ammond 2007-03-14 10:19:42 EDT
Created attachment 150037 [details]
"screenshot" of the problem

A picture of the screen from my digital camera. I apologise for taking so long
to get it.
Comment 6 Joe Ammond 2007-03-23 17:59:35 EDT
I've done some investigation on this bug. I pulled the xorg sources from git and
did a complete build. The latest driver from git works better than the current
one in rawhide, but doesn't work completely. With the following patch it works
perfectly on this hardware.
Comment 7 Joe Ammond 2007-03-23 18:01:10 EDT
Created attachment 150801 [details]
A patch to i830_display.c

Found this patch in various places, specifically
Comment 8 Joe Ammond 2007-03-23 18:02:01 EDT
Created attachment 150802 [details]
log from a working driver
Comment 9 Joe Ammond 2007-03-31 15:48:08 EDT
The latest version of xorg-x11-drv-i810 works on my laptop now.


This bug can be closed.
Comment 10 Joe Ammond 2007-03-31 15:49:45 EDT
Created attachment 151363 [details]
Working Xorg.0.log
Comment 11 Adam Jackson 2007-04-02 17:18:55 EDT
Marking resolved as per comment #9

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