Created attachment 109827
screenshot of tearing effect
When xrandr -o inverted is run, the resulting image is split down the middle. This happens 95% of the time; it has worked once or twice without tearing. Rotation can be activated through unity-control-center Display Settings rotation field, and that reliably works fine. When xrandr -o normal is run, the display returns to normal (although bug #1376760 is observed). xrandr -o right and xrandr -o left also reliably work without issue; this only occurs on xrandr -o inverted. The same behaviors are observed with the longer form of the command xrandr --output eDP1 --rotation inverted, etc.
Created attachment 109827
screenshot of tearing effect
When xrandr -o inverted is run, the resulting image is split down the middle. This happens 95% of the time; it has worked once or twice without tearing. Rotation can be activated through unity-control- center Display Settings rotation field, and that reliably works fine. When xrandr -o normal is run, the display returns to normal (although bug #1376760 is observed). xrandr -o right and xrandr -o left also reliably work without issue; this only occurs on xrandr -o inverted. The same behaviors are observed with the longer form of the command xrandr --output eDP1 --rotation inverted, etc.
This has also been reported at https:/ /github. com/pfps/ yoga-laptop/ issues/ 28, which uses xrandr commands to invert the display.
See also Launchpad: https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- intel/+ bug/1395182
lspci:
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
Screenshot attached.