[Bug 109112] "*ERROR* Failed to probe lspcon" when HDMI isn't plugged before boot
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri May 24 08:41:49 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=109112
--- Comment #30 from Kai-Heng Feng <kai.heng.feng at canonical.com> ---
(In reply to Swati Sharma from comment #28)
> (In reply to Kai-Heng Feng from comment #3)
> > I also tested Windows 10. HDMI still works when the cable wasn't plugged
> > before boot.
>
> Hi Kai-Heng Feng,
>
> If we go by theory, there is no 1:1 mapping of Windows and Linux driver
> architecture. Design for lsp-con is different in both. In Windows, you are
> able to probe lsp-con because during hotplug windows drivers reinitialize
> all the connectors whereas in linux, connectors are initialized only once.
> It means during boot time, if lspcon is not probbed..we won't be able to
> probe it during hotplug.
I understand Linux and Windows driver are quite different.
My point was, whether lspcon firmware has a bug or not is moot - software alone
can make it work, or at least workaround it.
>
> Since I am not having the same setup, I can't reproduce the issue. Give me
> some time so that I can arrange for the setup and get back to you.
Sure, thanks for your effort.
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