Thanks for testing and pointing out that it's upstream. Setting to
Triaged for now.
Yes, we've heard from several people about problems with 8xx. I hope
upstream will look into addressing the issues on these older chipsets.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Incomplete => Triaged
** Summary changed:
- laptop screen flickers
+ [i855] laptop screen flickers
** Description changed:
Binary package hint: xserver-xorg-video-intel
since upgrading from hardy to intrepid, the display on my Gateway MX6025
laptop now flickers. it is extremely noticeable in the login screens
(GDM), and slightly noticeable (headache inducing...) once logged in,
depending on the display brightness.
lowering the brightness makes it less obvious, but still present.
killing compiz made no difference.
+
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation 82852/855GM
Integrated Graphics Device [8086:3582] (rev 02)
+ Subsystem: Gateway 2000 Device [107b:0360]
+
there are quite a lot of error reports in the Xorg log:
(EE) intel(0): tried to update DSPARB with both planes enabled!
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1280x800"x0.0 68.90 1280 1301 1333 1408 800 804
808 816 -hsync -vsync (48.9 kHz)
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1280x800"x0.0 68.90 1280 1301 1333 1408 800 804
808 816 -hsync -vsync (48.9 kHz)
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1280x800"x0.0 68.90 1280 1301 1333 1408 800 804
808 816 -hsync -vsync (48.9 kHz)
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1280x800"x0.0 68.90 1280 1301 1333 1408 800 804
808 816 -hsync -vsync (48.9 kHz)
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): using SSC reference clock of 100 MHz
(II) intel(0): Selecting standard 18 bit TMDS pixel format.
(EE) intel(0): underrun on pipe B!
(EE) intel(0): tried to update DSPARB with both planes enabled!
(II) intel(0): EDID vendor "AUO", prod id 3853
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1280x800"x0.0 68.90 1280 1301 1333 1408 800 804
808 816 -hsync -vsync (48.9 kHz)
(II) intel(0): EDID vendor "AUO", prod id 3853
(EE) intel(0): underrun on pipe B!
(EE) intel(0): tried to update DSPARB with both planes enabled!
"underrun on pipe B"? also, "tried to update DSPARB with both planes enabled!"
also interesting, the only refresh rate available is 60Hz.. but isn't
that modeline telling me 68.9Hz?
--
[i855] laptop screen flickers
https://bugs.launchpad.net/bugs/292761
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