On Tue, May 12, 2020 at 03:36:01PM +0200, Massimo B. wrote: > Hello everybody, > > since Kernel 5.6.5 I encounter many syslog lines like > > [kernel] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. > - Last output repeated 4 times - > > I found some explanation at: > https://wiki.archlinux.org/index.php/intel_graphics#Framebuffer_compression_(enable_fbc) > But why do I get this with a i7-4790 Haswell, which is not pre-Sandy? FBC is a thing for all platform generations. > > Anyway I followed the hint and set > > # cat /etc/modprobe.d/i915.conf > options i915 enable_fbc=0 > > After reboot the setting seems active: > > # cat /sys/module/i915/parameters/enable_fbc > 0 > > But I still get the same logs. Which BIOS setting is responsible, how can I fix > that? Is there a better place to ask? There is a patch on its way somewhere to linus/stable trees to eliminate this dmesg spam: https://cgit.freedesktop.org/drm-intel/commit/?id=6b7fc6a3e6af4ff5773949d0fed70d8e7f68d5ce But it's a bit strange you still get it with fbc disabled. The logic for when to allocate the cfb may be a bit busted atm... > > # lspci |grep VGA > 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) > > # grep name /proc/cpuinfo |tail -n1 > model name : Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz > > Best regards, > Massimo > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Ville Syrjälä Intel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
