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.
Not thinking about it being April Fools Day, I immediately did:
yum -v check-update, then
yum -v update
then rebooted.
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
id (blah, blah) reason: WARNING: at drivers/gpu/drm/i915/intel_display.c:869 intel_wait_for_vblank+0x211/0x220 [i915]() time: Wed 01 Apr 2015 12:02:12 PM 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 package: kernel count: 11 Directory: /var/tmp/abrt/oops-2015-04-01-12:02:11-1220-1 Reported: cannot be reported
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 Directory: /var/tmp/abrt/oops-2015-04-03-11:41:49-590-1 Reported: cannot be reported
The Autoreporting feature is disabled. Please consider enabling it by issuing 'abrt-auto-reporting enabled' as a user with root privileges.
So is this line where the problem may be?:
drivers/gpu/drm/i915/intel_display.c:869 intel_wait_for_vblank+0x211/0x220 [i915]()
Started to search online for information, but quickly decided:
1) available info is over my head
2) when in a hole, stop digging
So, any obvious answers, other than a complete reinstall?
Note: I really thought Centos is about reinstalling after years, not months. Grrr . . .