[+cc linux-acpi, linux-kernel, dri-devel] Hi Roland, I have no idea how to debug this problem. Are you seeing something that suggests it may be a PCI problem? On Tue, Aug 23, 2016 at 11:23:45AM +0200, Roland Singer wrote: > Hi, > > hope somebody can help me fix this kernel problem which affects the following machines: > > - Clevo P651RA (i7-6700HQ/GTX 965M, part of the P6xxRx family which are also affected) > - MSI GE62 Apache Pro (i7-6700HQ/GTX 960M) > - Gigabyte P35V5 (i7-6700HQ/GTX 970M) > - Razer Blade 14" (2016) (i7-6700HQ/GTX 970M) (BIOS 5.11, 04/07/2016) > > > The kernel freezes if the graphical user session (Xorg & Wayland) is > started with a switched off discrete GPU card (NVIDIA). > If the discrete GPU is switched off after the graphical session start, > then everything works as expected, until the graphical session is restarted. > > This problem seams to be linked to specific BIOS settings. If the computer > is started with the following command line: > > acpi_osi=! acpi_osi="Windows 2009" > > then the kernel freeze does not occur anymore. However this required a special > ACPI DSDT firmware patch for the Razer Blade 2016 laptop: > > https://github.com/m4ng0squ4sh/razer_blade_14_2016_acpi_dsdt > > I strongly recommend to fix this in the kernel and I am ready to help and solve > this problem with some help. > > Here is a link to the GitHub issue with further information: > > https://github.com/Bumblebee-Project/Bumblebee/issues/764#issuecomment-241212595 > > Here are some more detailed information: > > https://github.com/Lekensteyn/acpi-stuff/blob/master/Clevo-P651RA/notes.txt > > Hope somebody can help. -- 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
