Driver for Nvidia Tesla K20m GPU not working

[sushantasarkar]

I am having a Dell Power Edge R 720 fitted with one Nvidia Tesla K20m GPU. I have installed the CUDA packages (except any driver from elrepo). Then I have installed the CUDA toolkit 7.5 package which also contains the driver of Nvidia Tesla K20m. After this I cannot log in to the GUI. I cannot start any application that uses the GUI. I am using CentOS 6.7 x86_64. System is 2x Intel Xeon 2.6 with 128GB Ram. Please tell me how can I get the GUI back. I am a novice Linux user and mostly work on the Windows platform.


The log file is mentioned below.


[ 86.172]
X.Org X Server 1.15.0
Release Date: 2013-12-27
[ 86.172] X Protocol Version 11, Revision 0
[ 86.172] Build Operating System: c6b8 2.6.32-220.el6.x86_64
[ 86.173] Current Operating System: Linux localhost.localdomain 2.6.32-573.12.1.el6.x86_64 #1 SMP Tue Dec 15 21:19:08 UTC 2015 x86_64
[ 86.175] Kernel command line: ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=128M rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet nouveau.modeset=0 rd.driver.blacklist=nouveau video=vesa:off vga=normal
[ 86.175] Build Date: 23 July 2015 05:32:11PM
[ 86.176] Build ID: xorg-x11-server 1.15.0-36.el6.centos
[ 86.176] Current version of pixman: 0.32.4
[ 86.177] Before reporting problems, check http://wiki.centos.org/Documentation
to make sure that you have the latest version.
[ 86.177] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 86.181] (==) Log file: "/var/log/Xorg.0.log", Time: Mon Dec 28 20:54:04 2015
[ 86.183] (==) Using config file: "/etc/X11/xorg.conf"
[ 86.183] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 86.183] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 86.184] (==) No Layout section. Using the first Screen section.
[ 86.184] (==) No screen section available. Using defaults.
[ 86.184] (**) |-->Screen "Default Screen Section" (0)
[ 86.184] (**) | |-->Monitor "<default monitor>"
[ 86.184] (==) No device specified for screen "Default Screen Section".
Using the first device section listed.
[ 86.184] (**) | |-->Device "Videocard0"
[ 86.184] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 86.184] (==) Automatically adding devices
[ 86.184] (==) Automatically enabling devices
[ 86.184] (==) Not automatically adding GPU devices
[ 86.184] (==) FontPath set to:
catalogue:/etc/X11/fontpath.d,
built-ins
[ 86.184] (==) ModulePath set to "/usr/lib64/xorg/modules"
[ 86.184] (II) The server relies on HAL to provide the list of input devices.
If no devices become available, reconfigure HAL or disable AutoAddDevices.
[ 86.184] (II) Loader magic: 0x823020
[ 86.184] (II) Module ABI versions:
[ 86.184] X.Org ANSI C Emulation: 0.4
[ 86.184] X.Org Video Driver: 15.0
[ 86.184] X.Org XInput driver : 20.0
[ 86.184] X.Org Server Extension : 8.0
[ 86.194] (--) PCI: (0:5:0:0) 10de:1028:10de:1015 rev 161, Mem @ 0xd8000000/16777216, 0x3fff0000000/268435456, 0x3ffee000000/33554432, BIOS @ 0x????????/65536
[ 86.194] (--) PCI:*(0:12:0:0) 102b:0534:1028:048c rev 0, Mem @ 0xd6000000/16777216, 0xdbffc000/16384, 0xdb000000/8388608, BIOS @ 0x????????/131072
[ 86.195] Initializing built-in extension Generic Event Extension
[ 86.195] Initializing built-in extension SHAPE
[ 86.196] Initializing built-in extension MIT-SHM
[ 86.196] Initializing built-in extension XInputExtension
[ 86.196] Initializing built-in extension XTEST
[ 86.197] Initializing built-in extension BIG-REQUESTS
[ 86.197] Initializing built-in extension SYNC
[ 86.198] Initializing built-in extension XKEYBOARD
[ 86.198] Initializing built-in extension XC-MISC
[ 86.199] Initializing built-in extension SECURITY
[ 86.199] Initializing built-in extension XINERAMA
[ 86.200] Initializing built-in extension XFIXES
[ 86.200] Initializing built-in extension RENDER
[ 86.201] Initializing built-in extension RANDR
[ 86.201] Initializing built-in extension COMPOSITE
[ 86.202] Initializing built-in extension DAMAGE
[ 86.202] Initializing built-in extension MIT-SCREEN-SAVER
[ 86.202] Initializing built-in extension DOUBLE-BUFFER
[ 86.203] Initializing built-in extension RECORD
[ 86.203] Initializing built-in extension DPMS
[ 86.204] Initializing built-in extension Present
[ 86.204] Initializing built-in extension X-Resource
[ 86.205] Initializing built-in extension XVideo
[ 86.205] Initializing built-in extension XVideo-MotionCompensation
[ 86.206] Initializing built-in extension SELinux
[ 86.206] Initializing built-in extension XFree86-VidModeExtension
[ 86.207] Initializing built-in extension XFree86-DGA
[ 86.207] Initializing built-in extension XFree86-DRI
[ 86.208] Initializing built-in extension DRI2
[ 86.208] (WW) "glamoregl" will not be loaded unless you've specified it to be loaded elsewhere.
[ 86.208] (II) "glx" will be loaded by default.
[ 86.208] (WW) "xwayland" is not to be loaded by default. Skipping.
[ 86.208] (II) LoadModule: "glx"
[ 86.208] (II) Loading /usr/lib64/xorg/modules/extensions/libglx.so
[ 86.275] (II) Module glx: vendor="X.Org Foundation"
[ 86.275] compiled for 1.15.0, module version = 1.0.0
[ 86.275] ABI class: X.Org Server Extension, version 8.0
[ 86.275] (==) AIGLX enabled
[ 86.275] Loading extension GLX
[ 86.275] (II) LoadModule: "nvidia"
[ 86.276] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[ 86.282] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 86.282] compiled for 4.0.2, module version = 1.0.0
[ 86.282] Module class: X.Org Video Driver
[ 86.282] (II) NVIDIA dlloader X Driver 352.39 Fri Aug 14 17:12:40 PDT 2015
[ 86.282] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 86.283] (--) using VT number 1

[ 86.296] (EE) No devices detected.
[ 86.296] (EE)
Fatal server error:
[ 86.296] (EE) no screens found(EE)
[ 86.296] (EE)
Please consult the CentOS support
at http://wiki.centos.org/Documentation
for help.
[ 86.296] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 86.296] (EE)