** Description changed:
Hello,
I use ubuntu 16.04 with hwe stack and an Radeon R9 285.
With kernel 4.13 and older, I can use a resolution of 2560x1440.
But, since the upgrade to kernel 4.15, I'm limited to the 1920x1200.
+
+ I have attached the output of xrandr on both kernel.
+ My scr
** Attachment added: "xrandr output kernel 4.13.0-45"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1785481/+attachment/5171785/+files/xrandr_4.13.0-45
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** Attachment added: "xrandr output kernel 4.15.0-29"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1785481/+attachment/5171786/+files/xrandr_4.15.0-29
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