From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 207901] Nouveau: In a 4 monitor setup, 1-2 displays remains black after boot
Date: Fri, 31 Jul 2020 21:23:19 +0000 [thread overview]
Message-ID: <bug-207901-2300-d78hMjNy2M@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-207901-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=207901
--- Comment #28 from Lyude Paul (lyude@redhat.com) ---
(In reply to Ilia Mirkin from comment #27)
> DP -> HDMI is, most likely, just passive, so the displays are being driven
> as HDMI rather than as DP. DP is the problematic protocol...
Hi-so, my first guess then might actually be a bad DP adapter. In my experience
DP cables (usually the full-size ones, but I've had it happen with one or two
passive adapters as well) have a bad habit of breaking really easily. One time
I actually spent a week trying to fix a bug that'd I'd already tried
troubleshooting by replacing the DP cable, only to eventually find out the
cable I replaced it with also magically went bad.
Mind posting one more log with the same parameters as last time? I probably
can't tell for sure but usually you'll see a lot of link training failures or
timeouts when the cable has gone bad (but sometimes the symptoms are a lot more
sinister...). As well, I'd also try another adapter of course.
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next prev parent reply other threads:[~2020-07-31 21:23 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 19:17 [Bug 207901] New: Nouveau: In a 4 monitor setup, 1-2 displays remains black after boot bugzilla-daemon
2020-05-26 19:19 ` [Bug 207901] " bugzilla-daemon
2020-05-26 19:20 ` bugzilla-daemon
2020-05-26 19:20 ` bugzilla-daemon
2020-05-26 19:21 ` bugzilla-daemon
2020-05-26 19:26 ` bugzilla-daemon
2020-05-26 19:28 ` bugzilla-daemon
2020-05-27 15:37 ` bugzilla-daemon
2020-05-27 15:38 ` bugzilla-daemon
2020-05-27 15:38 ` bugzilla-daemon
2020-05-27 16:36 ` bugzilla-daemon
2020-05-27 19:35 ` bugzilla-daemon
2020-05-27 19:35 ` bugzilla-daemon
2020-05-27 19:37 ` bugzilla-daemon
2020-06-10 22:28 ` bugzilla-daemon
2020-06-10 23:49 ` bugzilla-daemon
2020-06-11 17:31 ` bugzilla-daemon
2020-06-18 15:14 ` bugzilla-daemon
2020-06-18 15:30 ` bugzilla-daemon
2020-06-23 16:49 ` bugzilla-daemon
2020-06-25 15:27 ` bugzilla-daemon
2020-06-25 15:28 ` bugzilla-daemon
2020-07-02 19:03 ` bugzilla-daemon
2020-07-13 14:51 ` bugzilla-daemon
2020-07-13 14:52 ` bugzilla-daemon
2020-07-20 21:44 ` bugzilla-daemon
2020-07-27 15:32 ` bugzilla-daemon
2020-07-27 15:37 ` bugzilla-daemon
2020-07-31 21:23 ` bugzilla-daemon [this message]
2020-08-10 15:32 ` bugzilla-daemon
2020-09-21 18:54 ` bugzilla-daemon
2020-11-02 15:48 ` bugzilla-daemon
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