2018-07-20 22:22 GMT+02:00 Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>:
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:
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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