I reinstalled my laptop with wily (15.10) while hoping kernel 4.2.0.7
could fix the problem. I got a step forward. The drm related error is
gone, but a seg fault rises up in Xorg.log and I ended up in a black
screen when switching to nvidia:
[ 1704.596] (EE) intel(G0): failed to set mode: Permission denied [13]
[ 1704.612] (EE)
[ 1704.612] (EE) Backtrace:
[ 1704.616] (EE) 0: /usr/bin/X (xorg_backtrace+0x4e) [0x56276b19962e]
[ 1704.617] (EE) 1: /usr/bin/X (0x56276afe5000+0x1b8999) [0x56276b19d999]
[ 1704.617] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fe372b08000+0x352f0)
[0x7fe372b3d2f0]
[ 1704.617] (EE) 3: /usr/bin/X (RRTellChanged+0x35e) [0x56276b0fd08e]
[ 1704.617] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so
(0x7fe36ccbe000+0x7184d) [0x7fe36cd2f84d]
[ 1704.617] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so
(0x7fe36ccbe000+0x71bad) [0x7fe36cd2fbad]
[ 1704.617] (EE) 6: /usr/lib/xorg/modules/drivers/intel_drv.so
(0x7fe36ccbe000+0x7316d) [0x7fe36cd3116d]
[ 1704.617] (EE) 7: /usr/lib/xorg/modules/drivers/intel_drv.so
(0x7fe36ccbe000+0x77af5) [0x7fe36cd35af5]
[ 1704.617] (EE) 8: /usr/bin/X (0x56276afe5000+0x966b6) [0x56276b07b6b6]
[ 1704.617] (EE) 9: /usr/bin/X (0x56276afe5000+0x136c92) [0x56276b11bc92]
[ 1704.617] (EE) 10: /usr/bin/X (0x56276afe5000+0x5c3ec) [0x56276b0413ec]
[ 1704.617] (EE) 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0)
[0x7fe372b28a40]
[ 1704.617] (EE) 12: /usr/bin/X (_start+0x29) [0x56276b02b6c9]
[ 1704.617] (EE)
[ 1704.617] (EE) Segmentation fault at address 0x3d0
[ 1704.617] (EE)
Fatal server error:
[ 1704.617] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 1704.617] (EE)
[ 1704.617] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1449560
Title:
Cannot login with Nvidia Optimus hardware installed(Ubuntu 15.04)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1449560/+subscriptions
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