Bug 216556
| Summary: | Yubikey breaks idle power states | ||
|---|---|---|---|
| Product: | Power Management | Reporter: | Thom Wiggers (kernel) |
| Component: | Hibernation/Suspend | Assignee: | Rafael J. Wysocki (rjw) |
| Status: | NEW --- | ||
| Severity: | normal | CC: | daniel, leho |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| See Also: | https://bugzilla.kernel.org/show_bug.cgi?id=199689 | ||
| Kernel Version: | 5.19.13 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
I should clarify that I'm also running a Dell XPS 9370 with i7-8550U, as many others in https://bugzilla.kernel.org/show_bug.cgi?id=199689 |
As reported on #199689 in comments 93 [1] and 102 [2], if I have my Yubikey 5c nano plugged in, suspend doesn't work properly and the battery drains quickly. I'm opening this bug ticket as previously requested on that thread. My test case: 1. reboot so idle counters are zero 2. plug in yubikey 3. suspend, wait a few seconds 4. wake 5. cat /sys/devices/system/cpu/cpuidle/low_power_idle_{cpu,system}_residency_us 6. observe both are zero 7. unplug yubikey 8. suspend, wait a few seconds, wake 9. cat /sys/devices/system/cpu/cpuidle/low_power_idle_{cpu,system}_residency_us 10. non-zero values [1] https://bugzilla.kernel.org/show_bug.cgi?id=199689#c93 [2] https://bugzilla.kernel.org/show_bug.cgi?id=199689#c102