disable Intel RC6 in Grub

snowman66 · Nov 16, 2015

I have this line in /etc/default/grub

Code:

GRUB_CMDLINE_LINUX_DEFAULT="quiet i915.i915_enable_rc6=0"

but I got feeling that this command is ignored (since upgrade to pve4.0) because server crash randomly.

Code:

for i in /sys/module/i915/parameters/*;do echo ${i}=`cat $i`;done

returns

Code:

...
/sys/module/i915/parameters/enable_rc6=1
...

Any idea where could I put this line to disable rc6?

Thanks.

sigxcpu · Nov 16, 2015

Add a /etc/modprobe.d/i915.conf with the following contents

Code:

options i915 i915_enable_rc6=0

Then

Code:

update-initramfs -k all -u
reboot

snowman66 · Nov 17, 2015

Code:

cat /sys/module/i915/parameters/enable_rc6
0

/sys/module/i915/parameters/enable_rc6=0

Code:

GRUB_CMDLINE_LINUX_DEFAULT="quiet i915.enable_rc6=0"

Cheers!