From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 200695] Blank screen on RX 580 with amdgpu.dc=1 enabled (no displays detected)
Date: Sun, 16 Feb 2020 21:12:14 +0000 [thread overview]
Message-ID: <bug-200695-2300-qXyY94L6jk@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-200695-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=200695
babgozd (babgozdtb@outlook.com) changed:
What |Removed |Added
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CC| |babgozdtb@outlook.com
--- Comment #38 from babgozd (babgozdtb@outlook.com) ---
(In reply to Adam from comment #37)
> As several comments mention different behavior between the different
> connector types I found a spare DVI cable and tried connecting to the same
> monitor via that input and it worked! So once logged in I plugged in the
> HDMI cable and switched input and it worked just fine (monitor was glitchy
> at first but once I disabled DVI output in monitor configuration it worked
> perfectly). To confirm this was indeed working with the DC code path I
> tested audio over HDMI and it worked just fine (and does not work with DC
> disabled, as expected). So I rebooted with both the DVI and HDMI in and the
> output over HDMI worked all through boot. I then disconnected the DVI and
> rebooted and the HDMI continues to work so far. Unfortunately I don't have a
> displayport monitor around to test if that behaves as weirdly. Just to be
> clear, I had tried to make this monitor work for a couple weeks over HDMI
> and the only thing that worked was amdgpu.dc=0 until I plugged in the DVI
> connector so this was not a one off fail.
>
> I forgot to mention before that when the HDMI output was not working with DC
> my Xorg logs also showed no monitor detected.
>
> I can attach the two different Xorg logs if that helps?
I am following this thread since it has created. My R9 380 with DVI-I output is
connected to my VGA monitor with DVI-I male to VGA female adapter and I am
getting black/blank screen while booting with amdgpu.dc=1 which is default
since kernel 4.17. It is fine with amdgpu.dc=0. I can provide logs too if any
kernel contributor wants to investigate the problem any further.
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next prev parent reply other threads:[~2020-02-16 21:12 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-31 18:32 [Bug 200695] New: Blank screen on RX 580 with amdgpu.dc=1 enabled (no displays detected) bugzilla-daemon
2018-07-31 18:33 ` [Bug 200695] " bugzilla-daemon
2018-07-31 18:34 ` bugzilla-daemon
2018-07-31 18:37 ` bugzilla-daemon
2018-07-31 18:37 ` bugzilla-daemon
2018-07-31 18:38 ` bugzilla-daemon
2018-08-28 15:40 ` bugzilla-daemon
2018-08-28 15:42 ` bugzilla-daemon
2018-09-06 6:51 ` bugzilla-daemon
2018-09-10 13:45 ` bugzilla-daemon
2018-09-17 17:46 ` bugzilla-daemon
2018-09-17 18:09 ` bugzilla-daemon
2018-09-18 2:10 ` bugzilla-daemon
2018-09-18 13:43 ` bugzilla-daemon
2018-09-18 15:02 ` bugzilla-daemon
2018-10-01 17:30 ` bugzilla-daemon
2018-10-10 21:16 ` bugzilla-daemon
2018-10-22 18:52 ` bugzilla-daemon
2018-11-06 16:13 ` bugzilla-daemon
2018-11-13 19:54 ` bugzilla-daemon
2018-11-19 18:15 ` bugzilla-daemon
2018-12-04 23:12 ` bugzilla-daemon
2018-12-28 6:07 ` bugzilla-daemon
2019-01-12 11:18 ` bugzilla-daemon
2019-01-13 19:35 ` bugzilla-daemon
2019-02-25 17:51 ` bugzilla-daemon
2019-02-26 16:43 ` bugzilla-daemon
2019-02-27 12:42 ` bugzilla-daemon
2019-03-07 15:42 ` bugzilla-daemon
2019-03-07 16:26 ` bugzilla-daemon
2019-03-07 16:57 ` bugzilla-daemon
2019-04-02 16:38 ` bugzilla-daemon
2019-04-02 16:39 ` bugzilla-daemon
2019-09-20 11:22 ` bugzilla-daemon
2019-11-05 14:07 ` bugzilla-daemon
2019-12-16 21:43 ` bugzilla-daemon
2019-12-16 23:52 ` bugzilla-daemon
2020-02-15 14:42 ` bugzilla-daemon
2020-02-16 13:47 ` bugzilla-daemon
2020-02-16 21:12 ` bugzilla-daemon [this message]
2020-05-08 10:55 ` bugzilla-daemon
2020-05-08 15:12 ` bugzilla-daemon
2020-05-08 18:20 ` bugzilla-daemon
2020-05-30 19:22 ` bugzilla-daemon
2020-06-16 23:39 ` bugzilla-daemon
2020-06-17 2:24 ` bugzilla-daemon
2020-06-17 3:11 ` bugzilla-daemon
2020-06-28 9:25 ` bugzilla-daemon
2020-06-28 9:26 ` bugzilla-daemon
2020-06-28 9:27 ` bugzilla-daemon
2021-04-06 7:51 ` bugzilla-daemon
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