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When my laptop wakes up from suspend, for a moment before the login screen appears, I see a black screen with the following error printed on it:

kernel: xhci_hcd 0000:38:00.0: BAR 0: error updating (0x9af00000 != 0x000000)

Usually I see multiple messages of this kind (all messages are the same), and the more time my laptop spends in suspend mode, the more messages appear on wake up.

I know that xhci_hcd is a USB driver, but I did not manage to solve this problem by myself.

My laptop is Dell XPS-9500. I have Ubuntu 20.04.1 LTS.

Maxim Aleksandrov
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1 Answers1

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Based on the information you provided, it appears that that message is actually a non-issue. So, the best, and easiest thing to do, would probably be to just ignore it.

Drew Howden Tech
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