[tech] [Request for help] Issues on my T480s

[tec]

Hi All,
Not sure if this is likely to bear any fruit, but why not try it and see. If anyone can help with any of these issues that would be great, or if you could point me to the best place to ask that would also be appricated :)T480s battery never reaches TLP charge stop threshold
I’ve recently got my first thinkpad, a T480s, and got it happily running linux (Solus). Unfortunately I’ve run into a snag. I set /sys/class/power_supply/BAT0/charge_start_threshold to 85%, and .../charge_stop_threshold to 90%. It seems that once it gets to 89% it just sits there. I waited for more than half an hour, and it stuck at 89%.
I’m a bit lost, does anyone have a suggestion?i915.enable_psr
Seeing this post it looks like enabling i915.enable_psr can be a good idea. So I put i915.enable_psr=1 in /etc/kernel/cmdline.d/performance.conf. Since cat /sys/module/i915/parameters/enable_psr gives 1 I imagine that worked. However the recommended ‘test’ (cat /sys/kernel/debug/dri/0/i915_edp_psr_status) gives Sink support: no when it should give Enabled: yes" and Active: yes.
Does this just mean that my pannel doesn’t support psr?Powertop & display backlight
I’m not sure how to read this. If powertop reports (this is at max brightness):Power est.    Usage     Device name
  3.15 W    100.0%        Display backlight

I think this is clearly 3.1W. Likewise at min brightness I see:Power est.    Usage     Device name
  1.88 W      1.0%        Display backlight

Does that mean the display is operating at 0.02W or 1.9W?Other powersavings
If anybody knows of any other good idas, I’d love to her them!

Thanks in advance,
Timothy.​
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.ucc.gu.uwa.edu.au/pipermail/tech/attachments/20191010/116e8999/attachment.htm