[CentOS] video problem since 2015-04-01 update

Sat Apr 4 01:13:46 UTC 2015
Francis Gerund <ranrund at gmail.com>

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
>
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