Ubuntu
linux-snapdragon package

  1. Bug #1860527
  2. Comment #0

Comment 0 for bug 1860527

Revision history for this message
Gavin Lin (gavin.lin) wrote :

sysfs files under /sys/devices/system/cpu/cpufreq/ disappear after upgrading kernel.
Kernel: Linux dragon410c 4.15.0-1071-snapdragon #78-Ubuntu SMP Thu Jan 16 22:30:28 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux

Steps:
1. Flash following image and boot the DUT
   https://people.canonical.com/~ppisati/ubuntu_embedded/ubuntu-embedded-18.04-dragon410c.img.xz
2. Enable proposed repository
3. Upgrade kernel to 4.15.0-1071
4. Reboot
5. Check file in /sys/devices/system/cpu/cpufreq/

Expected result:
Files are still there after upgrading kernel.

Actual result:
Files under /sys/devices/system/cpu/cpufreq/ disappear after upgrading kernel.

Hardware infomation:
Dragonboard 410c