Provided resolutions use incorrect aspect ratio
Submitted by mooninite @mooninite
Assigned to Chris Wilson @ickle
Description
Created attachment 115040
Intel Video ROM and Xorg log
Screen: native 2560x1440, 16:9
GPU: Core i7 4558U, Iris 5100, Haswell GT3
The attached Xorg log will show I'm using kernel 4.0 and the latest intel Xorg driver. This same issue occurs with older kernels and older intel driver versions.
Windows: All resolutions are available for all aspect ratios. Example, I can set 1920x1080 without a problem.
Linux: Only the native resolution is provided for 16:9. The other resolutions available are for 4:3 or 5:4.
$ xrandr
Screen 0: minimum 8 x 8, current 2560 x 1440, maximum 32767 x 32767
eDP1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 294mm x 165mm
2560x1440 59.95*+
1920x1440 60.00
1856x1392 60.01
1792x1344 60.01
1600x1200 60.00
1400x1050 59.98
1280x1024 60.02
1280x960 60.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
Other users of different laptops are reporting the same issue: https://bugzilla.redhat.com/show_bug.cgi?id=1211058
Attachment 115040, "Intel Video ROM and Xorg log":
intel-resolution-bug.tar.xz