From an earlier post, you may remember I said:
You need a better alternative UMS driver e.g. “intellegacy”, but @oldcpu has explained the problem with that and your newer h/w.
Well I checked my Xorg.0.log with “intellegacy” driver loaded, and here are the relative lines:
24.805] (II) LoadModule: "intellegacy"
24.806] (II) Loading /usr/lib64/xorg/modules/drivers/intellegacy_drv.so
24.827] (II) Module intellegacy: vendor="X.Org Foundation"
24.827] compiled for 1.8.0, module version = 2.9.1
24.827] Module class: X.Org Video Driver
24.827] ABI class: X.Org Video Driver, version 7.0
24.827] (II) intellegacy: Driver for Intel Integrated Graphics Chipsets: i810,
i810-dc100, i810e, i815, i830M, 845G, 852GM/855GM, 865G, 915G,
E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
4 Series, G45/G43, Q45/Q43, G41, B43, Clarkdale, Arrandale
24.827] (++) using VT number 7
Talk about speaking from both sides of the mouth at the same time!
Also, the chipsets in red don’t appear in the man page (11.3) for “intellegacy”.
Arrandale does appear in the Xorg.0.log for driver “intel”, but it doesn’t appear in the man page (11.3) for driver “intel”, see here:
SUPPORTED HARDWARE
intel supports the i810, i810-DC100, i810e, i815, i830M, 845G, 852GM, 855GM, 865G, 915G, 915GM, 945G, 945GM, 965G, 965Q, 946GZ, 965GM, 945GME, G33, Q33, Q35, G35, GM45, G45, Q45, G43, G41 chipsets, and Pineview-M in Atom N400 series, Pineview-D in Atom D400/D500 series.
Which one to believe? If the man page is right, Arrandale isn’t supported. Who knows. Comments, anyone?
BTW Sean, did you ever try “intellegacy” driver? If not, why not try, you have nothing to lose. If so, here’s how:
Make sure its separate package is installed on your system. To load “intellegacy” driver at startup, edit the file /etc/X11/xorg.conf.d/50-device.conf to add this line:
Driver "intellegacy"
For example:
Section "Device"
Identifier "Default Device"
#Driver "radeon"
## Required magic for radeon/radeonhd drivers; output name
## (here: "DVI-0") can be figured out via 'xrandr -q'
#Option "monitor-DVI-0" "Default Monitor"
Driver "intellegacy"
EndSection
Save, and reboot. Let us know the result.