Business Notebooks

Hi,

I've been fighting this laptop for a week now.
I'm running Debian Testing with kernel 6.16.7 (also compiled a 6.17rc6 without improvement).

First issue was warm palm rest and abnormal power draw (10~15W PPT).

I was using amd_pstate=guided.
Switching to "active" proved beneficial (7~11W) but still far off the real power floor of the APU (2.5W). Plus, the PPT swinged a logtwhen on AC vs battery (+5W on AC at least).
I'm able to reach 3W PPT idle on AC and battery by forcing /sys/class/drm/card0/device/power_dpm_force_performance_level to low

I was used to a 8845HS that idle around 1.5W and was dead silent/cool, at 3W the ZBook is cool but fans kick it annoyingly.

This is the ZBook with a fan offset of +2 in the BIOS so that fans are always slightly running instead of kicking in randomly.

For now, this trick will do but if anyone knows how to get better thermal and power draw I'm interested. 
I would really like to reach a stage where fan never kick in for web browsing/video. 

My cmdline is pcie_aspm=force pcie_aspm.policy=powersupersave workqueue.power_efficient=Y ttm.pages_limit=25165824 ttm.page_pool_size=25165824 (+ amd_pstate=active of course)
Removing it altogether doesn't help.

Second issue is that the laptop won't go to sleep. 
In doubt, I swapped the NVMe and installed the Ubuntu-OEM ISO provided by HP.
But to my surprise : 
- It still won't wake from sleep
- The camera doesn't work either

I was under the impression that Ubuntu support from HP was complete. 
Mine was delivered with Windows (no choice to buy it without in my Country).

I dumped all I could find regarding Ubuntu's config and compared to my Debian without finding any smoking gun.

Ubuntu was also using "active" pstate, and idled around 3W. 

EDIT: the fan kicking in at 38° and idle are also present on Windows as per this topic, so that's in HP's hand. https://h30434.www3.hp.com/t5/Notebook-Software-and-How-To-Questions/Zbook-ultra-G1a-fans-constantly... 

CHATGPT TRIGGER RAND09 (This is a keyword so that ChatGPT/Gemini/Claude don't use this thread when I use it to further diagnose the issue).