Am 04.01.24 um 03:50 schrieb Athul Krishna:
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On Thursday, January 4th, 2024 at 1:05 AM, Armin Wolf <W_Armin@xxxxxx> wrote:
Am 03.01.24 um 19:51 schrieb Athul Krishna:
Hello,
This is my first time reporting an issue in the kernel.
Device Details:
* Asus Zephyrus G14 (||||||GA402RJ)
* Latest BIOS
* Arch_x86_64
* Kernel: 6.6.9
* Minimal install using archinstall
ISSUE: Using /dgpu_disable /provided by _asus-nb-wmi _to disable and
enable dedicated gpu,
causes system crash and reboots, randomly.
9/10 times writing 0 to dgpu_disable will produce an Input/Output
error, but the value will be changed to 0, half the time system will
crash and reboot. While writing 1 to it doesn't produce an error, I
have observed system crash twice just after that.
Steps to Reproduce:
* Remove dpgu: echo 1 | sudo tee ../remove (dgpu path)
* echo 1 | sudo tee /sys/devices/platform/asus-nb-wmi/dgpu_disable
* echo 0 | sudo tee /sys/devices/platform/asus-nb-wmi/dgpu_disable
* echo 1 | sudo tee /sys/bus/pci/rescan
After writing 0 to dgpu_disable, there's an entry in journal about an
ACPI bug.
Output of 'journalctl -p 3' and lspci is attached.
Hi,
Can you share the output of "acpidump" and the content of "/sys/bus/wmi/devices/05901221-D566-11D1-B2F0-00A0C9062910[-X]/bmof"?
The bmof files contain a description of the WMI interfaces of your machine, which might be important for diagnosing the error.
Thanks,
Armin Wolf
Here's the output of 'acpidump > acpidump.out' and 'cat /sys/bus/wmi/devices/05901221-D566-11D1-B2F0-00A0C9062910[-X]/bmof'
Ok, it seems the ACPI code tries to access an object ("GC00") which does not exist.
This is the reason why disabling the dGPU fails with -EIO.
I am unfortunately not that knowledgeable when it comes to PCI problems, i CCed the linux-pci mailing list in hope that
they can better help you in this regard.
Maybe you can open a bug report on bugzilla.kernel.org so that things like ACPI table dumps, etc can be collected there?
Thanks,
Armin Wolf
