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You can verify what timeout the kernel uses for virtual console blanking via:
$ cat /sys/module/kernel/parameters/consoleblank 600
This file is read-only and the timeout is specified in seconds. The current default seems to be 10 minutes.
You can change that value with entering the following command on a virtual console (if you are inside an xterm you have to change to a virtual console via hitting e.g. Ctrl+Alt+F1).
$ setterm -blank VALUE
Where the new VALUE is specified in minutes. A value of 0 disables blanking:
$ cat /sys/module/kernel/parameters/consoleblank 600 $ setterm -blank 0 $ cat /sys/module/kernel/parameters/consoleblank 0
setterm has other powersaving related options, the must useful combination seems to be:
$ setterm -blank 0 -powersave off
Thus to permanently/automatically disable virtual console blanking on startup you can either:
consoleblank=0to the kernel parameters (edit grub configuration)
- add the
setterm -blank 0command to an
rc-localor equivalent startup script
/etc/issueis output on every virtual console:
# setterm -blank 0 >> /etc/issue
Choose one alternative from the above.