Bug#645983: 2560x1440 60Hz not working (Dell U2711)
On Thu, Oct 20, 2011 at 10:32:54 +0200, Martin Monperrus wrote:
> Package: xserver-xorg-video-intel
> I connect a Dell U2711 to the docking station using the display port
> interface (DP2 in xrandr, see below) and a diplayport cable. Then, the
> maximum resolution of 2560x1440 at 60.0 Hz does not work, the screen
> is black. The lower resolutions (e.g. 1920x1200) work.
> As suggested in http://rndhero.org/cms/index.php?id=10 a workaround
> consists of manually setting the refresh rate to 35 Hz.
Please use reportbug to file bugs so your report isn't missing essential
'reportbug -N 645983' should help for this bug.