if you have an intel graphic card & you are using the new intel X.org
driver [0] instead of the old i810 one you might — like me — get
the following errors in your
/var/log/Xorg.0.log & only some
strange resolutions:
(EE) intel(0): detecting sil164
(EE) intel(0): Unable to read from DVOI2C_E Slave 112.
(EE) intel(0): Unable to read from DVOI2C_E Slave 236.
(EE) intel(0): ivch: Unable to read register 0x00 from DVOI2C_B:04.
(EE) intel(0): Unable to read from DVOI2C_E Slave 112.
(EE) intel(0): tfp410 not detected got VID FFFFFFFF: from DVOI2C_E Slave 112.
(EE) AIGLX: Screen 0 is not DRI capable
the information in
#434028 lead
me to the following entries in my
/etc/X11/xorg.conf:
Section "Monitor"
...
# gtf 1280 1024 75
# 1280x1024 @ 75.00 Hz (GTF) hsync: 80.17 kHz; pclk: 138.54 MHz
Modeline "1280x1024_75.00" 138.54 1280 1368 1504 1728 1024 1025 1028
Option "PreferredMode" "1280x1024_75.00"
EndSection
& now my monitor is running on 1280x1024 again.
you might want to auto-adjust your monitor afterwards with the test image
from
nies.ch.
[0]
xserver-xorg-video-intel - X.Org X server -- Intel i8xx, i9xx display driver