(In reply to arpie from comment #140) > After hours of experimenting on this laptop : > > Computer : PC Specialist OptimusIX 15 (aka Clevo N8xxEP6) > BIOS : American Megatrends 1.07.13 > OS : Arch Linux > GPU : NVIDIA GTX 1060 Mobile > > Until recently, any attempt to use bumblebee or acpi commands to power down > the GPU have resulted in a system freeze with lspci, suspend, power cable > plug in, etc. No kernel line parameters seem to have any effect. > > I have discovered that the system freeze is closely linked to the > interaction between the nvidia graphics card on pci address 0000:01:00.0 and > its associated sound card at pci address 0000:01:00.1 (I don't actually > know what that sound card is doing - I presume it's for the HDMI port?) > > If I completely disable the audio card using : > echo 1 | sudo tee /sys/bus/pci/devices/0000:01:00.1/remove > > Then the system hangs are completely cured - I can acpi _OFF or _ON or _PS3 > or _PS0 to my hearts content and the gfx card will power up and down > perfectly, lspci behaves perfectly normally (without any lag), and > suspend/resume and power cable plug/unplug all works. Even better, kernel > power management on the PCI bus seems to work perfectly too, but only kicks > in when I rmmod nvidia. So far, bumblebee and bbswitch also seem to be > totally happy. > > Can anybody else confirm similar findings? > > Bear in mind that the audio card needs to be removed BEFORE the kernel loads > any audio modules. I do it like this : > > [Unit] > Description=Nvidia Audio Card OnBoot Disabler > Before=bumblebeed.service > > [Service] > Type=oneshot > RemainAfterExit=yes > ExecStart=/usr/bin/sh -c "echo 1 > /sys/bus/pci/devices/0000:01:00.1/remove" > ExecStop=/usr/bin/sh -c "echo 1 > /sys/bus/pci/rescan" > > [Install] > WantedBy=sysinit.target
Not working for me. Still freezing with this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1803179 Title: System does not reliably come out of suspend To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1803179/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
