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  1. Bug #1895606
  2. Comment #1

Comment 1 for bug 1895606

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AceLan Kao (acelankao) wrote :

commit f022ff7bf377ca94367be05de61277934d42ea74
Author: Mika Westerberg <email address hidden>
Date: Mon Sep 7 12:20:36 2020 +0300

    thunderbolt: Retry DROM read once if parsing fails

    Kai-Heng reported that sometimes DROM parsing of ASUS PA27AC Thunderbolt 3
    monitor fails. This makes the driver to fail to add the device so only
    DisplayPort tunneling is functional.

    It is not clear what exactly happens but waiting for 100 ms and retrying
    the read seems to work this around so we do that here.

    Link: https://bugzilla.kernel.org/show_bug.cgi?id=206493
    Reported-by: Kai-Heng Feng <email address hidden>
    Tested-by: Kai-Heng Feng <email address hidden>
    Cc: <email address hidden>
    Signed-off-by: Mika Westerberg <email address hidden>