[Intel-gfx] new i915 driver on centos 7.2 gives a blurred display

[Frederic Corne]

hello,

I have updated a Toshiba R600 from Centos 7.1 to 7.2 and now the display is
blurred (background, letters, ... but not menus) and time to time disk
manager (nemo) don't start.

if I reboot on the previous kernel (of 7.1 version) , all is ok

Any hint ?
The Centos Forum cannot help me.


With the new kernel 3.10.0-327 :
strings
/lib/modules/3.10.0-327.3.1.el7.x86_64/kernel/drivers/gpu/drm/i915/i915.ko
|grep "version"
rhelversion=7.2
srcversion=5D82611E09E968CE9608A88
vermagic=3.10.0-327.3.1.el7.x86_64 SMP mod_unload modversions
__UNIQUE_ID_rhelversion153
__UNIQUE_ID_srcversion152


X.Org X Server 1.17.2
Release Date: 2015-06-16
[ 62.240] X Protocol Version 11, Revision 0
[ 62.240] Build Operating System: 2.6.32-220.17.1.el6.x86_64
[ 62.240] Current Operating System: Linux zeus.home.net
3.10.0-327.3.1.el7.x86_64 #1 SMP Wed Dec 9 14:09:15 UTC 2015 x86_64
[ 62.241] Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-3.10.0-327.3.1.el7.x86_64
root=UUID=0f291128-54d6-447e-bd27-38fa88869eff ro vconsole.keymap=fr
vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=fr_FR.UTF-8
[ 62.241] Build Date: 20 November 2015 02:44:25PM
[ 62.241] Build ID: xorg-x11-server 1.17.2-10.el7
[ 62.241] Current version of pixman: 0.32.6
(...)

[ 62.279] (II) intel(0): Using Kernel Mode Setting driver: i915, version
1.6.0 20150327

the old kernel 3.10.0-229 which is OK :

strings
/lib/modules/3.10.0-229.20.1.el7.x86_64/kernel/drivers/gpu/drm/i915/i915.ko
|grep "version"
rhelversion=7.1
srcversion=4C1511022CF76DBA39FAA0D
vermagic=3.10.0-229.20.1.el7.x86_64 SMP mod_unload modversions
__UNIQUE_ID_rhelversion136
__UNIQUE_ID_srcversion135


X.Org X Server 1.17.2
Release Date: 2015-06-16
[ 61.829] X Protocol Version 11, Revision 0
[ 61.829] Build Operating System: 2.6.32-220.17.1.el6.x86_64
[ 61.829] Current Operating System: Linux zeus.home.net
3.10.0-229.20.1.el7.x86_64 #1 SMP Tue Nov 3 19:10:07 UTC 2015 x86_64
[ 61.830] Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-3.10.0-229.20.1.el7.x86_64
root=UUID=0f291128-54d6-447e-bd27-38fa88869eff ro vconsole.keymap=fr
vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=fr_FR.UTF-8
[ 61.830] Build Date: 20 November 2015 02:44:25PM
[ 61.830] Build ID: xorg-x11-server 1.17.2-10.el7
[ 61.830] Current version of pixman: 0.32.6
(...)
[ 61.859] (II) intel(0): Using Kernel Mode Setting driver: i915, version
1.6.0 20080730
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