http://bugzilla.opensuse.org/show_bug.cgi?id=1046957 http://bugzilla.opensuse.org/show_bug.cgi?id=1046957#c2 --- Comment #2 from Iakov Karpov --- (In reply to Takashi Iwai from comment #1)

Is it with Nvidia binary-only driver or nouveau? You can check without the nvidia graphics driver but efifb whether it gives the difference.

Other than that, it's a bit tough to check without the detailed information about your hardware. Basically the way to track is to either check the behavior change by disabling the h/w component one-by-one, or to try git bisection.

It's nouveau. There is no point using proprietary nvidia driver in my case, since the nvidia gpu is not much faster than integrated intel video. How do I disable components one-by-one? sudo /sbin/lspci 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) 00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5) 00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b5) 00:1d.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05) 01:00.0 VGA compatible controller: nVidia Corporation GF119M [GeForce GT 520M] (rev a1) 03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) 04:00.0 Ethernet controller: Atheros Communications AR8151 v2.0 Gigabit Ethernet (rev c0) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046957 http://bugzilla.opensuse.org/show_bug.cgi?id=1046957#c4 --- Comment #4 from Iakov Karpov --- Same with 4.4.76 kernel that comes with openSUSE 42.3, except that copying nouveau.ko no longer works. Also, tested with 4.12.5 from kernel:stable, and it also consumes much power. -- You are receiving this mail because: You are on the CC list for the bug.