Anyone here an HP dev? Need help contacting ProBook BIOS devs due to some severe linux bugs

[antintin]

Have a probook x360 435 g7 with a 4700u, and CPPC for the new amd-pstate is just not supported by the firmware, and the touchpad randomly stops working

For the touchpad issue I filed these kernel bug reports (both inactive):

https://bugzilla.kernel.org/show_bug.cgi?id=215253
https://bugzilla.kernel.org/show_bug.cgi?id=215345

 

[Brickwizard]

Welcome

the new amd-pstate is just not supported by the firmware

amd-pstate CPU Performance Scaling Driver — The Linux Kernel documentation

touchpad randomly stops working

9. Elantech Touchpad Driver — The Linux Kernel documentation

 

[auyer]

Hi
I own a similar model (x360 435 G7), and I believe it uses the same bios family (s80 bios).
I found this release notes that states that it supports amd CPPC. This should mean they should support the amd_pstate driver.

https://ftp.hp.com/pub/softpaq/sp112501-113000/sp112515.html

However, I cant find how to enable it, and the cpu is not exposing cppc functionalities.

➜   ls /sys/devices/system/cpu/cpu0 | grep cppc
... empty

 

[osprey]

Hi
I own a similar model (x360 435 G7), and I believe it uses the same bios family (s80 bios).
I found this release notes that states that it supports amd CPPC. This should mean they should support the amd_pstate driver.

https://ftp.hp.com/pub/softpaq/sp112501-113000/sp112515.html

However, I cant find how to enable it, and the cpu is not exposing cppc functionalities.

➜   ls /sys/devices/system/cpu/cpu0 | grep cppc
... empty

Evidently CPPC is enabled in the BIOS/UEFI. Maybe useful info here:

https://www.reddit.com/r/linux/comments/15p4bfs

 

[RPRX1145]

Have a probook x360 435 g7 with a 4700u, and CPPC for the new amd-pstate is just not supported by the firmware, and the touchpad randomly stops working

For the touchpad issue I filed these kernel bug reports (both inactive):

https://bugzilla.kernel.org/show_bug.cgi?id=215253
https://bugzilla.kernel.org/show_bug.cgi?id=215345

I faced that issue too. It seems that HP just simply disabled it by default with Linux (not sure if Windows uses the same settings since there's no way to check). But after force-enabling the CPPC in hidden BIOS options with smokeless UMAF, the amd_pstate driver is selected by default (previously acpi_freq), with full frequency range usable. My laptop is a 245 G8 with Ryzen 4500U. Hope this might help.