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해결

This information is provided for your convenience. Use of the third party Nvidia graphics driver is outside of the Production Support Scope of Coverage

1. Acquire the Nvidia driver:

• Download the appropriate driver for your graphics controller from http://www.nvidia.com
• Ensure that this driver is saved to the local disk of the target system. Installing from an external device, such as a flash drive, has been known to cause issues up to and including installation failure.

2. Edit Grub2 to blacklist the Nouveau driver:

• Edit /etc/default/grub and add the following to the GRUB_CMDLINE_LINUX line:

modprobe.blacklist=nouveau

• Rebuild the grub config and restart the system:

# grub2-mkconfig -o /boot/grub2/grub.cfg
# reboot

• Sometimes even after following the above steps to blacklist nouveau module, it is seen loaded at boot. # lsmod | grep -i nouveau .
  Most likely, this gets loaded from initramfs.
  In such cases, follow How to blacklist nouveau module on Red Hat Enterprise Linux 7?
• The driver can not be installed if the X server running on system. So make sure the system is started in text mode(runlevel 3).

3. Install your nvidia driver:

# sh nvidia_filename.run

4. At this point you will need to rebuild initramfs:

• Back up the current initramfs

# mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname  -r)-nouveau.img 

• Build the new one

# dracut /boot/initramfs-$(uname -r).img $(uname -r)

5. Reboot the system:

# reboot

This article may need some revision. On case 01635125, the steps had to be slightly modified in order for the customer to successfully install the drivers:

1) Create the blacklist file:

vi /etc/modprobe.d/blacklist.conf

It should only contain the following line:

blacklist nouveau

That has to be the ONLY thing in the file.

2) Create a new initramfs:

mv /boot/initramfs-uname -r.img /boot/initramfs-uname -r.img.bak

dracut -v /boot/initramfs-uname -r.img uname -r

3) Reboot the system into runlevel 3

init 3

4) Install the NVIDIA driver

5) Reboot

해결

Note: Before replacing nVIDIA proprietary driver with nouveau driver ensure that hardware is certified to run RHEL-6.X. The xorg-x11-drv-nouveau package shipped with RHEL-6.X doesn't support some nVIDIA Graphics chip that are too old. Use hardware certification link to check all certified hardware's.

Note: Steps for RHEL 7 can be found at How to disable the Nouveau driver and install the Nvidia driver in RHEL 7

Step 1: Start the procedure of cleaning NVIDIA proprietary driver.

a) Execute nvidia installation script with --uninstall argument.

Eg:

# ./Nvidia-???.run --uninstall   

b) Remove and re-install "mesa-libGL" package.

Eg:

# rpm -ev --nodeps mesa-libGL 
# yum install -y mesa-libGL

c) Remove or rename /etc/X11/xorg.conf file.

Eg:

# mv /etc/X11/xorg.conf /etc/X11/xorg.conf.save   

Step 2: Installation of NVIDIA proprietary driver blacklists nouveau driver hence during post un-installation of NVIDIA driver go through the following check list.

a1) (RHEL 6 and prior)Remove kernel parameters "rdblacklist=nouveau nomodset=0" from /boot/grub/grub.conf file
- Basically remove any commands that blacklist or disable nouveau and set modeset to "0" or "off"
a2)(RHEL7) Remove the kernel parameters "rd.blacklist.nouveau" "nouveau.modeset=0" and similar arguments from the GRUB_CMDLINE_LINUX line in /etc/default/grub
- Rebuild your grub.cfg file with the command: grub2-mkconfig -o /boot/grub2/grub.cfg on legacy installations, or grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg for EFI installations

b) Remove or comment the line "blacklist nouveau" from /etc/modprobe.d/blacklist.conf file.

Eg:

# vim /etc/modprobe.d/blacklist.conf
# blacklist nouveau

c) Remove files inside /etc/modprobe.d/ which belong to nvidia for e.g files like nvidia-blacklist*.conf

d) Reboot the system.

Eg:

# reboot

Step 3: Verify nouveau module is properly loaded.

a) Verify nouveau module is loaded.

Eg:

# lsmod | grep "nouveau"

b) If nouveau module is not present in the result of lsmod command output then load it manually.
- You may also have to reinstall the 'xort-x11-drv-nouveau' package. Please ensure that you are installing the version of this package that corresponds to the version of your xorg server and kernel version.

Eg:

# modprobe -i nouveau

Step 4: Verify correct screen resolution.

a) Check the maximum screen resolution supported by the hardware chip.

Eg:

# xrandr | grep "max"

b) To get more information about monitors attached and screen resolutions.

Eg:

# xrandr

c) To get names of connected displays.

# xrandr | grep -i "connected" | grep -v "disconnected" | cut -d " " -f1      

d) Add custom screen resolution with xrandr if its not detected by default.

Eg: To set screen resolution of 1920 x 1200 pixels, execute the following command.

# gtf 1920 1200 60.0

e) Copy whole string after Modeline from the result of above command and do like this;

Eg:

# xrandr --newmode "1920x1200_60.00"  193.16  1920 2048 2256 2592  1200 1201 1204 1242  -HSync +Vsync
# xrandr --addmode DVI-I-1 1920x1200_60.00 
# xrandr --output DVI-I-1 --mode 1920x1200_60.00 

f) After above step try switch modes to any default mode detected and then to the required mode.

Eg:

# xrandr -s 1024x768
# xrandr -s 1920x1200

해결

• Remove nouveau related parameters from grub cmd line:-
  Edit /etc/default/grub and remove the following from the GRUB_CMDLINE_LINUX line

rd.driver.blacklist=nouveau nouveau.modeset=0

• Rebuild the grub

#grub2-mkconfig -o /boot/grub2/grub.cfg

• Run the nvidia installation script with uninstall option

#./Nvidia-???.run --uninstall 

• Rebuilding the initramfs for nouveau

#mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname  -r)-preavous.img 
#dracut /boot/initramfs-$(uname -r).img $(uname -r)

• Reinstalling the mesa-libgl packages

#yum reinstall mesa-libGL

• Remove or rename /etc/X11/xorg.conf file.

# mv /etc/X11/xorg.conf /etc/X11/xorg.conf.save

• Reboot the system.

#reboot

Note:- Remove any configuration you have to block the nouveau from /etc/modprobe.d