Can you please attach your Xorg.log? Thanks, Daniel On Tue, Jul 14, 2015 at 6:51 AM, Harald Arnesen <harald@xxxxxxxxxxx> wrote: > 4.2-rc2 gives me an unusable X11 screen (se attached picture). > 4.2-rc1 is OK. > > Bisected to the following: > > > 19ee835cdb0b5a8eb11a68f25a51b8039d564488 is the first bad commit > commit 19ee835cdb0b5a8eb11a68f25a51b8039d564488 > Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Date: Mon Jun 29 14:01:19 2015 +0100 > > drm/i915: Declare the swizzling unknown for L-shaped configurations > > The old style of memory interleaving swizzled upto the end of the > first even bank of memory, and then used the remainder as unswizzled on > the unpaired bank - i.e. swizzling is not constant for all memory. This > causes problems when we try to migrate memory and so the kernel prevents > migration at all when we detect L-shaped inconsistent swizzling. > However, this issue also extends to userspace who try to manually detile > into memory as the swizzling for an individual page is unknown (it > depends on its physical address only known to the kernel), userspace > cannot correctly swizzle objects. > > v2: Mark the global swizzling as unknown rather than adjust the value > reported to userspace. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91105 > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Daniel Vetter <daniel.vetter@xxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > > :040000 040000 a34dedabcb878bfc55ce76c231d60fc801f79319 > 3e45d34152a15df5cf07fa50e6720c9948ed8a6a M drivers > > > > And indeed, if I revert this commit, 4.2-rc2 is OK as well. > Kernel config and dmesg from rc1 and rc2 is attached. > -- > Hilsen Harald -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
