Red Hat Bugzilla – Bug 451887
No direct rendering on intel 945GM with duel head
Last modified: 2018-04-11 10:01:27 EDT
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
Direct Rendering is disabled on F9 with current updates.
Created attachment 309679 [details]
I just noticed /dev/drm does not exist on my box.
That's a shame. And I blame udev.
ok I updated udev to 124-1.fc9.1 from updates-testing and now have
/dev/dri/card0 I still do not have dri enabled.
Created attachment 309868 [details]
log with updated udev and /dev/dri/card0 present
This seems to be another duel head config problem with the latest server update
for f9. If I run X without a xorg.conf file and only the laptop monitor I have
direct rendering. When I use xorg.conf file with a vga monitor attached there is
no direct rendering.
Created attachment 309870 [details]
Log with working dri. Single monitor and no xorg.conf file
Created attachment 309873 [details]
Log without dri. duel monitor and xorg.conf file
Created attachment 309874 [details]
my xorg.conf file
Created attachment 309876 [details]
Duel head config
without an xorg.conf file dri works and I have two monitors but mirrors of each
other. I need to have them spanning but when I use the xorg.conf file I have
problems. System-config-display gives me errors when I use it.
I have pinpointed the problem to the virtual 3200 1200 line in the xorg.conf
file. Without this line the two displays are brought up with direct rendering
enabled. But the displays are lot aligned correctly. I need to have the virual
I just read that the 3D engine has an 11 bit coordinate space at one point
making it impossible to draw to areas beyond 2048x2048. So I guess this is not
possible for this hardware.
I will close this bug.
Thanks for letting me know.