From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 107784] [AMD tahiti XT] displayport broken
Date: Sun, 09 Sep 2018 13:05:06 +0000 [thread overview]
Message-ID: <bug-107784-502-EXZO94MX4u@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-107784-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=107784
--- Comment #22 from Dmitrii Tcvetkov <demfloro@demfloro.ru> ---
(In reply to Dmitrii Tcvetkov from comment #21)
> (In reply to Sylvain BERTRAND from comment #20)
> > Roughly, if you have a cpu with a frequency above 4.2GHz (max unsigned
> > 32bits),
> > linux time subsystem gets broken leading to the timeouts in displayport
> > programming. Ofc, my cpu runs at 4.7GHz.
>
> I hit the bug on AMD FX-9590 machine with RX 580 and 2 displayport monitors.
> As for you bisect wasn't successful for me and led me to network merge
> commit.
>
> Looks like you're right! If I downclock the CPU to 4.2 GHz then current
> mainline master (f8f65382c98a28e3c2b20) boots fine.
Relevant discussion about cf7a63ef4e0203f (x86/tsc: Calibrate tsc only once)
http://lkml.iu.edu/hypermail/linux/kernel/1809.0/03226.html
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next prev parent reply other threads:[~2018-09-09 13:05 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-02 17:22 [Bug 107784] [AMD tahiti XT] displayport broken bugzilla-daemon
2018-09-02 17:28 ` bugzilla-daemon
2018-09-03 9:17 ` bugzilla-daemon
2018-09-03 10:30 ` bugzilla-daemon
2018-09-03 14:55 ` bugzilla-daemon
2018-09-05 7:19 ` bugzilla-daemon
2018-09-05 11:50 ` bugzilla-daemon
2018-09-05 12:28 ` bugzilla-daemon
2018-09-05 12:33 ` bugzilla-daemon
2018-09-05 13:38 ` sylvain.bertrand
2018-09-05 13:38 ` bugzilla-daemon
2018-09-05 17:44 ` bugzilla-daemon
2018-09-05 21:48 ` sylvain.bertrand
2018-09-05 21:48 ` bugzilla-daemon
2018-09-05 21:52 ` bugzilla-daemon
2018-09-05 21:54 ` bugzilla-daemon
2018-09-06 10:04 ` bugzilla-daemon
2018-09-06 12:31 ` sylvain.bertrand
2018-09-06 12:31 ` bugzilla-daemon
2018-09-06 14:22 ` bugzilla-daemon
2018-09-06 16:20 ` sylvain.bertrand
2018-09-06 16:20 ` bugzilla-daemon
2018-09-06 21:10 ` sylvain.bertrand
2018-09-07 21:48 ` sylvain.bertrand
2018-09-06 21:10 ` bugzilla-daemon
2018-09-07 21:48 ` bugzilla-daemon
2018-09-09 3:45 ` sylvain.bertrand
2018-09-09 3:46 ` bugzilla-daemon
2018-09-09 5:57 ` bugzilla-daemon
2018-09-09 13:05 ` bugzilla-daemon [this message]
2018-09-09 13:11 ` bugzilla-daemon
2018-09-09 14:59 ` sylvain.bertrand
2018-09-09 14:59 ` bugzilla-daemon
2018-09-10 5:20 ` bugzilla-daemon
2018-09-10 9:15 ` bugzilla-daemon
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