Grabbed a monitor (1600x900 default resolution) that emits a good EDID, and tried both the 3.13 and 3.15 kernel with no xorg.conf or xorg.conf.d files. Kernel-3.13 worked as expected - X came up at 1600x900. Kernel 3.15 failed to modeset; X came up at 1280x1024 (not sure if it was really 1024, but that what xrandr claimed)
On Thu, Apr 17, 2014 at 1:26 PM, Steven Usdansky <usdanskys@xxxxxxxxx> wrote:
Not sure where to report this problem (or what I should be looking for), but when booting any of the 3.15 kernels, kernel-modesetting fails and X comes up with a resolution of 1024x768, rather than the 1680x1050 resolution specified in my xorg.conf file. xorg.conf is necessary because my monitor does not emit a proper EDID.
~$ uname -rkernel-3.15.0-0.rc1.git1.1.fc21.x86_64
~$ lspci | grep 9100
02:00.0 VGA compatible controller: NVIDIA Corporation C78 [GeForce 9100] (rev a2)Reverting to kernel -3.13.7-200.fc20.x86_64 avoids the problem (and problems I've been having with firefox-28 locking up with 3.14 kernels).
--RockDoctor
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