On Fri, Apr 3, 2015 at 10:30 AM, Francis Gerund <ranrund at gmail.com> wrote: > Hello! > > No updates for days until 2015-04-01. Then presented with huge steaming > pile of updates all at once, apparently related to Centos 7.1 release. > After reboot, there is a problem with the video. It seems to flicker when > the mouse pointer touches the screen edges. Also, sometimes when viewing > pages in Firefox, the window becomes partially covered with horizontal > black lines. > > During reboots, before the login screen appears, there are quickly > disappearing messages seeming to include references to "drm:9" and some > sort of "underrun". > > In the terminal window, I get a message: > > ABRT has detected 3 problem(s). For more info run: abrt-cli list --since > 1428078184 > > When I do that, I get: > > id (blah, blah) > reason: WARNING: at drivers/gpu/drm/i915/intel_display.c:869 > intel_wait_for_vblank+0x211/0x220 [i915]() > time: Fri 03 Apr 2015 11:41:49 AM CDT > cmdline: BOOT_IMAGE=/vmlinuz-3.10.0-229.1.2.el7.x86_64 > root=UUID=(blah, blah) ro vconsole.keymap=us > vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=en_US.UTF-8 > count: 1 > Directory: /var/tmp/abrt/oops-2015-04-03-11:41:49-590-0 Does this kernel.org bug look similar to yours? https://bugzilla.kernel.org/show_bug.cgi?id=86771 I suggest you try kernel-ml from ELRepo and see if that fixes the issue. Akemi