Pierre Neidhardt transcribed 1.0K bytes: > > I've re-tested with 4.16.6: still happening, the battery life is about > 50% down. > > If I blacklist the nouveau kernel module, then the module stops crashing > in loop, which improves battery time a little bit, but the difference > with 4.15 is still startling. > > Note that blacklisting the nouveau kernel module has the side effect of > preventing the kernel from putting the video card to sleep, which drains > the battery even more. > > -- > Pierre Neidhardt
Out of Guix suppport scope, but I have a mainboard (not with nouveau) which showed problems with a certain 4.x version of Linux[1]. The debug sugesstion by Intel is to configure and run the drm-tip branch[0] of the kernel. I can't advocate how to package or do this here (which is too bad), but for all things graphics related this will be suggested by upstream most certainly. 0: branch as in the repository, not linux repository itself. In case you are unfamilar with linux development branching model. 1: Variants of https://bugs.freedesktop.org/buglist.cgi?quicksearch=i915%20intel_cpu_fifo_underrun_irq_handler&list_id=579081 and this is still going on.
