On 05/02/2014 12:30 PM, Tim Gardner wrote:
On 05/02/2014 11:21 AM, Alex Deucher wrote:
On Fri, May 2, 2014 at 12:40 PM, Tim Gardner tim.gardner@canonical.com wrote:
I've bisected a resume regression on a Lenovo x120e to 177cf92de4aa97ec1435987e91696ed8b5023130 (drm/crtc-helpers: fix dpms on logic). Everything works fine with this patch reverted on top of 3.15-rc3. I realize it is correcting a coding error that has been in place since 3.11, but it is also causing this laptop to resume to a black screen wherein the platform appears to be locked up (no console, no network). See attached bisect log and lspci. The BIOS version is 1.15.
Does the attached patch help? I haven't had a chance to unwind all the logic in the crtc helper code.
Alex
Nope, same symptom. Black screen on resume, no network, etc.
rtg
linux-next tip (20140502) appears to have the same bug.
rtg