Re: [arch-general] [RFC] Potentially deprecating primus, bumblebee, virtualGL and primus_vk

Le 14/01/2021 à 19:15, Emil Velikov a écrit :

On Wed, 13 Jan 2021 at 16:52, Archange wrote:

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Le 12/01/2021 à 21:45, Emil Velikov a écrit :

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On Tue, 12 Jan 2021 at 18:24, Archange wrote:

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OK, will try to check tomorrow with a friend that has an Optimus laptop.

Perfect, thanks in advance.

To trigger the event one has to echo into a sysfs file... Don't recall exactly, some of the following should be it. a) If the nvidia module is driving an fbcon: - echo "0" > /sys/class/vtconsole/vtconX/bind b) and/or a combination of the following - echo "remove" (or was it "unbind") > /sys/class/drm/cardX/device/uevent - echo "remove" (or was it "unbind") > /sys/class/drm/cardX/device/driver/uevent - echo "1" > /sys/class/drm/cardX/device/driver/unbind

2) If the driver is loaded before X, it works for PRIME. However, the card refuse to unbind because it’s in use by X even if nothing is actually running on it.

It just works here so I suspect that a command or the order was off.

My setup: - Intel/Nvidia system, monitor plugged/powered by Intel GPU - Therefore fb0 is for Intel (alongside card0) and Nvidia does not have fb device only card1.

Same on the laptop of my friend.

What I've done: - Toggle render offload ON via xrandr, try glxgears - Toggle render offload OFF via xrandr

Not sure how I’m supposed to do that, didn’t find any reference online.

- Issue the removal - echo "remove" > /sys/class/drm/card1/uevent This segfaults Xorg right away. - Confirm that it works - Xorg.0.log should list "removing GPU device ...blabla/card1"

It does appear, with the segfault: [117777.574] (II) config/udev: removing GPU device /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 /dev/dri/card1 [117777.575] xf86: remove device 0 /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 [117777.593] (II) UnloadModule: "nvidia" [117777.593] (II) UnloadSubModule: "glxserver_nvidia" [117777.593] (II) Unloading glxserver_nvidia [117777.593] (II) UnloadSubModule: "wfb" [117777.593] (II) UnloadSubModule: "fb" [117777.594] (EE) [117777.594] (EE) Backtrace: [117777.594] (EE) 0: /usr/lib/Xorg (xorg_backtrace+0x53) [0x55efd7ad1f63] [117777.594] (EE) 1: /usr/lib/Xorg (0x55efd798b000+0x151da5) [0x55efd7adcda5] [117777.594] (EE) 2: /usr/lib/libc.so.6 (0x7f105e9f1000+0x3d6a0) [0x7f105ea2e6a0] [117777.595] (EE) 3: /usr/lib/Xorg (RRTellChanged+0x969) [0x55efd7a3e3d9] [117777.595] (EE) 4: /usr/lib/Xorg (0x55efd798b000+0x1bb9d4) [0x55efd7b469d4] [117777.595] (EE) 5: /usr/lib/Xorg (0x55efd798b000+0x1bbb28) [0x55efd7b46b28] [117777.595] (EE) 6: /usr/lib/Xorg (0x55efd798b000+0x14a331) [0x55efd7ad5331] [117777.595] (EE) 7: /usr/lib/Xorg (WaitForSomething+0x250) [0x55efd7ad0c00] [117777.595] (EE) 8: /usr/lib/Xorg (0x55efd798b000+0x39914) [0x55efd79c4914] [117777.595] (EE) 9: /usr/lib/libc.so.6 (__libc_start_main+0xf2) [0x7f105ea19152] [117777.595] (EE) 10: /usr/lib/Xorg (_start+0x2e) [0x55efd79c55de] [117777.595] (EE) [117777.595] (EE) Segmentation fault at address 0x34 [117777.595] (EE) Fatal server error: [117777.595] (EE) Caught signal 11 (Segmentation fault). Server aborting [117777.595] (EE) [117777.595] (EE) Please consult the The X.Org Foundation support      at http://wiki.x.org  for help. [117777.595] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [117777.595] (EE) [117777.595] (II) AIGLX: Suspending AIGLX clients for VT switch [117777.682] (EE) Server terminated with error (1). Closing log file Maybe I missed a fb? Not sure… I might try again tomorrow but really not sure, I have a plane to catch and my friend might not be available early enough. Regards, Bruno