2018-07-20 22:22 GMT+02:00 Rodrigo Vivi <rodrigo.v...@intel.com>: > On Thu, Jul 19, 2018 at 11:31:19PM +0200, Marcin Owsiany wrote: > > $ xrandr --fb 8960x2880 > > xrandr: screen cannot be larger than 8192x8192 (desired size > > 8960x2880) > > I'm afraid that it is a hardware limitation that you won't be able to > workaround.
Interestingly, just yesterday Ville Syrjälä posted a patch series for "GTT remapping for display", which concludes in this hopeful-looking patch called "Bump gen4+ fb size limits to 32kx32k: https://lists.freedesktop.org/archives/intel-gfx/2018-July/171922.html Which looks oddly similar to what I encountered on reddit. I don't pretend to even understand what "GTT remapping" is, but maybe there is hope after all? ;-) > But a log would be interesting anyway... (both dmesg and xorg.0.log) > I'll try digging up that patched kernel sometime and get the messages. > > > My current workaround is to pretend that the displays are arranged > > vertically, but even after a few months I'm sometimes having trouble > > remembering that I need to move mouse cursor UP when I want to go to > > LEFT display :-) > > This is another bug.... And probably the right (only?) fixable fr your > setup. > Why is this a bug? What I meant is that two wide monitors fit within 8192x8192 when using xrandr's --above but not --left-of, so I'm just using the former despite having a different physical arrangement. Marcin PS: Sorry for the initial double-post, I thought my first email was blackholed while I was not yet subscribed to the list.
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