I have been running some comparative tests between distro's on a Thinkpad T450S with a i5-5300U and I think this is related to CPU throttling.
The issue seems to occur on: - Ubuntu 18.04 (5.0.0 stock kernel) - Ubuntu 19.10 (5.3 stock kernel) - OpenSUSE Tumbleweed (5.3 stock kernel) But not on OpenSUSE 15.1 Leap (4.12.14 stock kernel) I have installed the mainline 4.12.14 kernel on Ubuntu 18.04 but that gives me the same issues. What I have noticed however is that 18.04, 19.10 and Tumbleweed all try to throttle the CPU, and during file copy the CPU frequency never gets above 1Ghz. OpenSUSE Leap however has a much more lax throttling policy and never dips below 2Ghz, even when the laptop is running on battery. I have checked the CPU frequency with `cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq`. Also this tool might give some valuable insight: https://github.com/amanusk/s-tui I find that running a stresstest with that tool (or stress-ng, which with it integrates) seem to eradicate the issue (because the CPU frequency is kept unthrottled while running a stresstest). If anyone has some ideas for tests I can do, please let me know. I have a spare SSD that I can pop in the laptop so it shouldn't be that big of a deal reinstalling the OS. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1208993 Title: Ubuntu slows down and hangs while copying file from/to USB To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1208993/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
