* [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub.
@ 2018-09-19 9:17 bugzilla-daemon
2018-09-19 9:17 ` [Bug 201183] " bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-19 9:17 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
Bug ID: 201183
Summary: AMDGPU Dual displays and only DP screen works after
grub.
Product: Drivers
Version: 2.5
Kernel Version: 4.18.*
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-dri@kernel-bugs.osdl.org
Reporter: marten.b@gmail.com
Regression: No
Created attachment 278653
--> https://bugzilla.kernel.org/attachment.cgi?id=278653&action=edit
kernel 4.18.7 dmesg
Kernel 4.17 is working but the last 2 versions of 4.18.* will not register my
HDMI TV connected to an RX 480.
I have a Dell LCD on DP and an LG TV on HDMI.
If I unplug the DP display after grub screen the computer will have no display.
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
@ 2018-09-19 9:17 ` bugzilla-daemon
2018-09-19 9:26 ` bugzilla-daemon
` (10 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2018-09-19 9:17 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #1 from marten (marten.b@gmail.com) ---
Created attachment 278655
--> https://bugzilla.kernel.org/attachment.cgi?id=278655&action=edit
Working kernel 4.17 dmesg
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
2018-09-19 9:17 ` [Bug 201183] " bugzilla-daemon
@ 2018-09-19 9:26 ` bugzilla-daemon
2018-09-19 9:43 ` bugzilla-daemon
` (9 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2018-09-19 9:26 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
Michel Dänzer (michel@daenzer.net) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |harry.wentland@amd.com,
| |nicholas.kazlauskas@amd.com
--- Comment #2 from Michel Dänzer (michel@daenzer.net) ---
For the time being, maybe amdgpu.dc=0 on the kernel command line can serve as a
workaround.
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
2018-09-19 9:17 ` [Bug 201183] " bugzilla-daemon
2018-09-19 9:26 ` bugzilla-daemon
@ 2018-09-19 9:43 ` bugzilla-daemon
2018-09-19 12:42 ` bugzilla-daemon
` (8 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2018-09-19 9:43 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #3 from marten (marten.b@gmail.com) ---
Thank you Michel.
That fixes it.
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
` (2 preceding siblings ...)
2018-09-19 9:43 ` bugzilla-daemon
@ 2018-09-19 12:42 ` bugzilla-daemon
2018-09-20 5:12 ` bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-19 12:42 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #4 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) ---
Do you only see this problem occur before you start an X session?
It might help if you could post a log from 4.18 with drm.debug=6 included in
your boot parameters.
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
` (3 preceding siblings ...)
2018-09-19 12:42 ` bugzilla-daemon
@ 2018-09-20 5:12 ` bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 5:12 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #5 from marten (marten.b@gmail.com) ---
Created attachment 278677
--> https://bugzilla.kernel.org/attachment.cgi?id=278677&action=edit
Kernel 4.18 with drm.debug=6
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
` (4 preceding siblings ...)
2018-09-20 5:12 ` bugzilla-daemon
@ 2018-09-20 5:20 ` bugzilla-daemon
2018-09-20 12:38 ` bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 5:20 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #6 from marten (marten.b@gmail.com) ---
(In reply to Nicholas Kazlauskas from comment #4)
> Do you only see this problem occur before you start an X session?
>
> It might help if you could post a log from 4.18 with drm.debug=6 included in
> your boot parameters.
Im running Fedora 28 so it wayland. When I remove the quiet from the kernel
line the HDMI display works so a few seconds until the GUI for the boot drive
encryption displays only on the second display only.
I attached the file with drm.debug=6
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
` (5 preceding siblings ...)
2018-09-20 5:20 ` bugzilla-daemon
@ 2018-09-20 12:38 ` bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 12:38 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #7 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) ---
It doesn't look like your log buffer was large enough to hold the full log.
A log with drm.debug=4 might have enough information to work off of. The other
option is reposting the drm.debug=6 log with a large log buffer size in the
kernel config.
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
` (6 preceding siblings ...)
2018-09-20 12:38 ` bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 13:26 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #8 from marten (marten.b@gmail.com) ---
Hay the machine can do a large buffer. How do I enable that. I saw it cut off
at 30 seconds.
Its ryzen 1700, 16G ram and many hd's
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 13:28 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #9 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) ---
It should be the CONFIG_LOG_BUF_SHIFT option. For example,
CONFIG_LOG_BUF_SHIFT=21.
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 13:33 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #10 from marten (marten.b@gmail.com) ---
Created attachment 278683
--> https://bugzilla.kernel.org/attachment.cgi?id=278683&action=edit
kernel 4.18 drm.debug=4
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
` (9 preceding siblings ...)
2018-09-20 13:33 ` bugzilla-daemon
@ 2018-09-20 23:18 ` bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 23:18 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
marten (marten.b@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #278677|0 |1
is obsolete| |
Attachment #278683|0 |1
is obsolete| |
--- Comment #11 from marten (marten.b@gmail.com) ---
Created attachment 278687
--> https://bugzilla.kernel.org/attachment.cgi?id=278687&action=edit
Kernel 4.18 drm.debug=6
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* [Bug 201183] AMDGPU Dual displays and only DP screen works after grub.
2018-09-19 9:17 [Bug 201183] New: AMDGPU Dual displays and only DP screen works after grub bugzilla-daemon
` (10 preceding siblings ...)
2018-09-20 23:18 ` bugzilla-daemon
@ 2018-09-20 23:19 ` bugzilla-daemon
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From: bugzilla-daemon @ 2018-09-20 23:19 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=201183
--- Comment #12 from marten (marten.b@gmail.com) ---
(In reply to Nicholas Kazlauskas from comment #9)
> It should be the CONFIG_LOG_BUF_SHIFT option. For example,
> CONFIG_LOG_BUF_SHIFT=21.
Updated the file.
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