[Bug 252473] Loud continuous sound from Lenovo ThinkPad E490 on reboot

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Jan 6 15:17:47 UTC 2021


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252473

            Bug ID: 252473
           Summary: Loud continuous sound from Lenovo ThinkPad E490 on
                    reboot
           Product: Base System
           Version: 12.2-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: underpinnedd at gmail.com

Created attachment 221328
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=221328&action=edit
Lenovo ThinkPad E490 hardware details

There is a loud continuous sound from Lenovo ThinkPad E490 with FreeBSD
12.x-RELEASE almost every time booting up from a "reboot". 

This is probably better explained on
https://forums.freebsd.org/threads/thinkpad-e490-sound-audio-only-works-after-specific-boot-from-poweroff-not-any-connected-plug.78286/

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