Okay, thanks to all who took the time to reply. What a shame; I hadn't planned on spending Easter weekend learning to do kernel upgrades, but . . . here it goes. On Fri, Apr 3, 2015 at 5:59 PM, Ned Slider <ned at unixmail.co.uk> wrote: > > > On 03/04/15 20:41, Francis Gerund wrote: > > Well, it could be the same, but the bug report does seem to refer to the > > bug being in kernel series 3.18. I am just using whatever 3.10 series > > kernel comes standard with Centos 7.x. > > > > Well, the CentOS kernel is a 3.10 kernel in name (or number) only. Red > Hat backport much stuff from later kernels, and in this case that > includes much broken code for the Intel i915 driver. The code is broken > from around 3.15 and still not completely fixed in the current 4.0-rc6 > code base. Updating to a newer kernel, and hence a newer i915 driver, > may or may not help, but it doesn't hurt to try. > > > I don't know anything about bug reports, and I an not familiar with > > swapping out kernels in Centos. > > > > BTW, is El Repo another name for the EPEL repository? > > > > No, they are two completely separate repositories: > > http://wiki.centos.org/AdditionalResources/Repositories > > > > > > > On Fri, Apr 3, 2015 at 1:07 PM, Akemi Yagi <amyagi at gmail.com> wrote: > > > >> 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 > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >