Red Hat Bugzilla – Bug 441444
Using i915.modeset=1 causes an error message
Last modified: 2014-03-16 23:13:44 EDT
Description of problem:
Using i915.modeset=1 to enable the modesetting kernel driver causes the kernel
to print out a message on boot about this being an unknown boot parameter.
It's pretty obvious now that 'quiet' mode is back on.
Version-Release number of selected component (if applicable):
It's not built in so you need to put that in modprobe.conf.
If this is happening on the live CD or install disk the parameter is working
because the code that loads the driver parses the kernel command line to pick
this up. There doesn't seem to be any good way of killing that warning though.
See /etc/modprobe.d/i915modeset - it's set up to be configued via /proc/cmdline
So the kernel warning is bogus but there's no good way to kill it. Turning off
the warnings completely would make it hard to find real mistakes in the command
Upstream has been debating this problem but nobody has a good answer yet.