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Created page with 'In some of our labs (e.g. T404X) the machines have a different video card which doesn't work with the default drivers in CentOS7. If your system boots but everything looks blurry…'
In some of our labs (e.g. T404X) the machines have a different video card which doesn't work with the default drivers in CentOS7. If your system boots but everything looks blurry: follow these steps to fix it.
# Boot your system normally and log in. You won't be able to read anything but you should be able to log in knowing your credentials.
# Press Ctrl++/Ctrl+- (hold control and press + or -) until you can see the top right corner of the screen clearly, zoomed in.
# Open gnome-terminal
# Create the file <code>/etc/modprobe.d/blacklist.conf</code> with the following contents: <pre>blacklist nouveau</pre>
# Run the following two commands:
<source lang="bash">mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r).img.bak
dracut -v /boot/initramfs-$(uname -r).img $(uname -r)</source>
This will make sure that your initrd doesn't have the nouveau driver in it. That's the driver that's causing a problem on these machines. Once you reboot your system should look fine.
# Boot your system normally and log in. You won't be able to read anything but you should be able to log in knowing your credentials.
# Press Ctrl++/Ctrl+- (hold control and press + or -) until you can see the top right corner of the screen clearly, zoomed in.
# Open gnome-terminal
# Create the file <code>/etc/modprobe.d/blacklist.conf</code> with the following contents: <pre>blacklist nouveau</pre>
# Run the following two commands:
<source lang="bash">mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r).img.bak
dracut -v /boot/initramfs-$(uname -r).img $(uname -r)</source>
This will make sure that your initrd doesn't have the nouveau driver in it. That's the driver that's causing a problem on these machines. Once you reboot your system should look fine.
