Laptop freezes changing video cards

Graphics / Linux Linux
1

Hi everyone,

I search a lot to my issue described here
https://www.reddit.com/r/linuxhardware/comments/6ewpyy/ubuntu_freezes_on_login_after_nvidiaprime/

The only thing I believe can work is the fix propose by medakk

I followed the steps mentioned early but when I put the SSD3T.aml into Grub2 doesn’t start.
So my question is how I can find the mismatch mentioned by medakk here:

I hope you can help me!

Thanks for advanced

2

Judging by the reddit thread you have a similar Asus as medakk but not he same.

  • acpi_osi=! acpi_osi=“Windows 2009” stopped the freezing
  • Touchpad stopped working, so needs modified ssdt
  • similar duplicate definition of PRT0 in ssdt
    Just as a note, one conclusion of medakk’s thread is that you will have to ‘systemctl restart diplay-manager’ to switch gpus when using GDM/Gnome, logout/login won’t work.

What did you do to extract/disassemble/modify/assemble/pack the ssdt?

To find the right ssdt to disassemble and modify, grep for LKEN
To find the ssdt with the duplicate definition to remove for disassembly , grep for PRT0 but dont remove the dsdt.
Please run acpidump/nvidia-bug-report.sh and attach output files.

Edit: typo PRT0 not PR0

3

I followed this steps Laptop freezes when starting X11 and discrete graphics are OFF · Issue #764 · Bumblebee-Project/Bumblebee · GitHub
mentioned by medakk without success.

Here is grep:

root@GL553VD:~/dsdt# grep LKEN *
Binary file SSDT3.dat matches
root@GL553VD:~/dsdt# grep PRT0 *
Binary file DSDT.dat matches
Binary file SSDT1.dat matches

my acpidump:
https://gist.githubusercontent.com/glats/2efe819cbc21202ed2ad0c7611bb2096/raw/46115857afbeb9441a4b75c117d5e55d4c0e189b/acpidump.txt

and the nvidia report
https://gist.githubusercontent.com/glats/e45f81d5b511998cc320265a3e0bc30e/raw/41ddfb5f53972416ad41ed98e9262f4b28236695/nvidia-bug

4

It’s the same as medakk’s so his howto should work unchanged. But your logs don’t show a trace that you’re loading the modified table.
dmesg should tell:
ACPI: SSDT ACPI table found in initrd [kernel/firmware/acpi/ssdt3.aml]
and
ACPI: Table Upgrade: override [SSDT-PegSsd- PegSsdt]

Did you make the changes to grub and ran update-grub2 afterwards?

5

Yes I did it.
I’ll try again and I’ll check in dmesg if I find the override.
I’ll comment soon.
Thanks.

6

After followed the steps nothing changed.

Here my dmesg grep ACPI:

Here my grub entry:

This is really frustrating.

7

I finally did it.
I had to do:

cat initrd.img-4.12.0-041200rc3-generic >> acpi_gpufix.img

and then:

glats@GL553VD:~$ dmesg | grep ACPI | grep override
[    0.000000] ACPI: Table Upgrade: override [SSDT-PegSsd- PegSsdt]
[    0.000000] ACPI: SSDT 0x000000007A715080 Physical table override, new table: 0x0000000079493000
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ9 used by override.

I don’t know why two initrd into grub entry doesn’t work.

8

Don’t do that. You won’t be able to boot once you get a kernel update. You can’t have two initrd entries, the second is overwriting the first. Instead, put both images in one line:

initrd /boot/acpi_gpufix /boot/initrd.img-4.12.0-041200rc3-generic

And don’t modify the grub.cfg, instead modify the script for generating it, like medakk said:
in /etc/grub.d/10_linux
change the line (around line 143)

initrd ${rel_dirname}/${initrd}

to

initrd ${rel_dirname}/acpi_gpufix ${rel_dirname}/${initrd}

and run update-grub2 afterwards. This will keep the override working on kernel updates.

9

Yes I already edited 10_linux to put the initrd line but I did two initrd instead of one.
I’ll try that option.
Thanks.

10

Another question, With Intel GPU the fan start run but with nvidia GPU the fan doesn’t start.
How I can turn off? It’s really noisy

11

Don’t know, use ‘sensors’ to see if anything’s overheating and ‘top’ what’s causing this. PM medakk to see if he’s facing the same problem.