Hi. On Sat, Mar 28, 2020 at 05:43:01PM +0100, l0f...@tuta.io wrote: > Hi, > > I'm on Buster. > Could somebody explain me please why my i915 PSR option doesn't seem to be > taken into account after reboot (still -1 instead of 0): > > $ sudo modinfo i915 | grep -i psr > parm: enable_psr:Enable PSR (0=disabled, 1=enabled) Default: -1 > (use per-chip default) (int) > > $ ls -l /etc/modprobe.d/i915.conf > -rw-r--r-- 1 root root 26 mars 28 17:09 /etc/modprobe.d/i915.conf > > $ sudo cat /etc/modprobe.d/i915.conf > options i915 enable_psr=0 > > $ sudo cat /sys/module/i915/parameters/enable_psr > -1
Probably because your /etc/modprobe.d/i915.conf did not get included in initrd. "i915" usually gets loaded before root filesystem is loaded, so your file does not get any effect. Execute "update-initramfs -k all -u", check the presence of i915.conf in initrd (lsinitrams), reboot and check it one more time. Reco
