Good evening,
investigating this for more than a month now. This is the story …
I own several Lenovo Thinkpad W530 Laptops in good condition, all with i7-3740QM, 32GB RAM, 512 GB SSD, all with Leap 15.2 KDE, one even with Leap 15.0 KDE, so urgent need for upgrade, thought of Leap 15.4 KDE. Having > 6 years experience with openSUSE Leap and TW systems and like to stick with openSUSE.
After booting, idle temperatures typically are around 45°C, fan is at 0 rpm, using Thinkfan with my customized configuration. The idle temperature around 45°C is valid for Leap 15.0 - 15.3 on all my Thinkpad W530 machines. However, if I install Leap 15.4 or TW, I am getting an idle temperature around 60°C after a fresh install, with BIOS fan or Thinkfan, with Wifi on or off, no matter what.
I have tried all these Leap 15 systems, with several configurations (Fan software, Wifi on/off, even with several desktops like XFCE, openbox etc.) however the difference did not go away. Even CPU load would be around 1 % with the freshly installed Leap 15.4 or TW systems, in comparison with the sesasoned Leap 15.0 - 15.3 systems, where CPU load is around 3 - 5 %.
So, even with less CPU idle load the idle temperatures would be higher.
Maybe one more info, watching YouTube videos. On my seasoned Leap 15.0 - 15.4 systems, “video” temperature typically is 60°C, sometimes 70°C up to 80°C depending on quality, however with Leap 15.4 or TW installed (and packman codecs, too), I am getting 80°C up to 100°C, with the same video, Firefox web browser, video quality, no matter what.
I tried to find out the reason for the high(er) temperatures with Leap 15.4 in comparison to 15.3, but was not able to pin down the culprit. I have described my problem in quite general terms and did not provide detailed information about the diagnosis software and methods I have tried, nor did I provide log files and other results of my investigations.
Thank you for your consideration, I am looking forward to hear from you, what I might have overlooked. Regards, M.