cannot open kubuntu desktop nor xubuntu desktop

[wuyoung]

i'm new in GPU computing and after i installed nvidia-361.28 and cuda-7.5 all the windows fell.
wua...what a huge mess
cannot even log in when i reboot my system.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8.1
ProcVersionSignature: Ubuntu 3.19.0-59.66~14.04.1-generic 3.19.8-ckt19
Uname: Linux 3.19.0-59-generic x86_64
.tmp.unity.support.test.1:

ApportVersion: 2.14.1-0ubuntu3.20
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Tue May 24 18:27:31 2016
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 NVIDIA Corporation GM107 [GeForce GTX 750 Ti] [10de:1380] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd Device [1458:362d]
InstallationDate: Installed on 2015-12-08 (168 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
MachineType: Gigabyte Technology Co., Ltd. B85M-D3V
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-59-generic root=UUID=ab447542-e029-488c-92f4-58169f0b0af6 ro quiet splash vt.handoff=7
Renderer: Software
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/17/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: FB
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B85M-D3V
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrFB:bd01/17/2014:svnGigabyteTechnologyCo.,Ltd.:pnB85M-D3V:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnB85M-D3V:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: B85M-D3V
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.65+git20151026.c745e541-0ubuntu0ricotz~trusty
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~trusty
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~trusty
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.99+git20140806.fbf575cb-0ubuntu0sarvatt~trusty
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20151202.da9ad388-0ubuntu0sarvatt~trusty
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11+git20141030.3fb97d78-0ubuntu0sarvatt~trusty2
xserver.bootTime: Tue May 24 18:22:03 2016
xserver.configfile: /etc/X11/xorg.conf
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input USB Optical Mouse MOUSE, id 8
 input AT Translated Set 2 keyboard KEYBOARD, id 9
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.15.1-0ubuntu2.7

[Paul White (paulw2u)]

We are sorry that we do not always have the capacity to review all reported bugs in a timely manner. You reported this bug some time ago and there have been many changes in Ubuntu since that time.

Ubuntu 14.04 (trusty) reached end-of-life on April 25,2019.

Do you still see a problem related to the one that you reported when using a currently supported version of Ubuntu? Please let us know if you do otherwise this report can be left to expire in approximately 60 days time.

Thank you for helping make Ubuntu better.

[Paul White (paulw2u)]

With no reply from reporter, closing.