Am 30.08.2016 um 20:13 schrieb Ilia Mirkin: > On Tue, Aug 30, 2016 at 2:02 PM, Roland Singer > <roland.singer@xxxxxxxxxxxxx> wrote: >> I configured bbswitch to not set any states automatically... >> So it's possible to obtain and verify the GPU power state. >> >> However I removed the bbswitch module and booted with nouveau. >> >> Kernel 4.7.2: nouveau switches the discrete GPU off. >> I can't trigger the freeze, because bbswitch is missing. >> I'll work with the system and see if it will freeze. >> >> Kernel 4.8-rc4: nouveau does not care about the power state and >> the discrete GPU is never switched off. I will notice >> this, because the second cooling FAN will stop... >> Same log messages as send before. > > That's surprising. I believe there's an issue with the new logic when > there's an HDMI audio subdevice. However that only appears if there's > a cable plugged in, at least in the systems Peter tested. You should > be able to see whether it's there or not with 'lspci'. > > You can check for sure by looking in the vgaswitcheroo state. It > should say DynOff when it's powered off. > > Either way, I think using bbswitch + nouveau isn't supported by > anyone, so if you want to use it that way, you're on your own. (You > may want to load nouveau with runpm=0 so that nouveau doesn't try to > manage the GPU suspend stuff.) > > -ilia > Kernel 4.8-rc4: While running lspci, following kernel log message was printed on the TTY: nouveau: 0000:01:00:0: priv: HUB0: 6013d4 0000573f (1f408200) nouveau: 0000:01:00:0: priv: HUB0: 10ecc0 ffffffff (1940822c) This is my output of lspci: 00:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 07) 00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 07) 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06) 00:08.0 System peripheral: Intel Corporation Skylake Gaussian Mixture Model 00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31) 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31) 00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31) 00:15.1 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #1 (rev 31) 00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31) 00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1) 00:1c.5 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #6 (rev f1) 00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1) 00:1d.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #13 (rev f1) 00:1e.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO UART #0 (rev 31) 00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31) 00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31) 00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31) 00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31) 01:00.0 3D controller: NVIDIA Corporation GM204M [GeForce GTX 970M] (rev a1) 3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) 3d:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller (rev 01) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
