https://bugzilla.kernel.org/show_bug.cgi?id=98751
Bug ID: 98751 Summary: radeon: multihead "no signal" on one of the monitors - regression Product: Drivers Version: 2.5 Kernel Version: 4.0.3+ Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: mikkeloscar@gmail.com Regression: No
Since this commit: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/... one of my two monitors doesn't get a signal (it just says "no signal").
The monitors are connected to a Radeon HD 6990 card. One is connected through HDMI and one through DVI. I'm using the radeon driver.
Most of the time it is the monitor connected through HDMI which doesn't get a signal, but I was able to switch it around somehow by messing around with screen orientation in X (not quite sure how to replicate or if it's even relevant).
I tried to revert the commit in kernel 4.0.4 (latest I tried) and that solves the problem for me.
https://bugzilla.kernel.org/show_bug.cgi?id=98751
Mikkel Oscar Lyderik mikkeloscar@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |mikkeloscar@gmail.com Regression|No |Yes Severity|high |normal
https://bugzilla.kernel.org/show_bug.cgi?id=98751
Alex Deucher alexdeucher@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #1 from Alex Deucher alexdeucher@gmail.com --- Please attach your xorg log and dmesg output.
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #2 from Mikkel Oscar Lyderik mikkeloscar@gmail.com --- Created attachment 177561 --> https://bugzilla.kernel.org/attachment.cgi?id=177561&action=edit dmesg
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #3 from Mikkel Oscar Lyderik mikkeloscar@gmail.com --- Created attachment 177571 --> https://bugzilla.kernel.org/attachment.cgi?id=177571&action=edit xorg log
https://bugzilla.kernel.org/show_bug.cgi?id=98751
Mike Noe noeerover@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |noeerover@gmail.com
--- Comment #4 from Mike Noe noeerover@gmail.com --- Same problem here on Tumbleweed x86-64
I have a monitor connected to DVI and a HDTV connected to HDMI on a HD6570 (Turks). Recent TW dup with the 4.03 kernel breaks dual-mon support. Basically, when booting (with the HDTV on) or when connecting the HDTV (via HDMI), the primary monitor on DVI just goes directly into sleep mode and won't come back unless I use xrandr directly. If I get to Kscreen5, I can disable the HDMI which will then re-enable the DVI (even though it shows enabled).
4.01 and earlier work great, do not have this problem. I also tried on the latest two RCs with the same results.
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #5 from Mike Noe noeerover@gmail.com --- Created attachment 177581 --> https://bugzilla.kernel.org/attachment.cgi?id=177581&action=edit xorg.log
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #6 from Mike Noe noeerover@gmail.com --- Created attachment 177591 --> https://bugzilla.kernel.org/attachment.cgi?id=177591&action=edit dmesg.txt
https://bugzilla.kernel.org/show_bug.cgi?id=98751
Robin Bankhead kernel@headbank.co.uk changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |kernel@headbank.co.uk
--- Comment #7 from Robin Bankhead kernel@headbank.co.uk --- Duplicate of #98651.
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #8 from Mikkel Oscar Lyderik mikkeloscar@gmail.com --- It's actually a 6950 card I have, same as in #98651.
I called it 6990 because that is what lspci tells me, but that might narrow it down?
https://bugzilla.kernel.org/show_bug.cgi?id=98751
Andy Furniss adf.lists@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |adf.lists@gmail.com
--- Comment #9 from Andy Furniss adf.lists@gmail.com --- I just hit this one with my R9270X.
Reverting "drm/radeon: adjust pll when audio is not enabled" fixes it.
For me starting with DVI on and enabling HDMI results in loosing DVI. If I off then auto DVI it comes back but HDMI goes off, repeat for HDMI = DVI off again and so on.
I did find a way to get both working = xset dpms force off then coming out of dpms both will come on an behave as if nothing was ever wrong (I can flip either on/off without affecting the other).
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #10 from Alex Deucher alexdeucher@gmail.com --- Created attachment 178001 --> https://bugzilla.kernel.org/attachment.cgi?id=178001&action=edit possible fix
Does the attached patch help?
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #11 from Mikkel Oscar Lyderik mikkeloscar@gmail.com --- It's working for me!
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #12 from Mike Noe noeerover@gmail.com --- Yes, fixed it here too on Turks, tested with 4.1-RC5
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #13 from Andy Furniss adf.lists@gmail.com --- Also fixes for me.
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #14 from Thomas v10lator@myway.de --- @Alex Deucher: For Bug #98651 it helps: There's a image. But HDMI-Audio isn't working (which it did prior to the bug).
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #15 from Thomas v10lator@myway.de --- Summary for Bug #98651
Kernel 4.0.2: HDMI image and audio working. Kernel 4.0.3 and upward: No HDMI. Kernel 4.0.4 with commit d5c3b64b9618214a5443c57c64511ab5fa599cec reverted: HDMI image works, audio does not. Kernel 4.0.4 with attachment 178001: HDMI image works, audio does not.
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #16 from Alex Deucher alexdeucher@gmail.com --- (In reply to Thomas from comment #15)
Summary for Bug #98651
Kernel 4.0.2: HDMI image and audio working. Kernel 4.0.3 and upward: No HDMI. Kernel 4.0.4 with commit d5c3b64b9618214a5443c57c64511ab5fa599cec reverted: HDMI image works, audio does not. Kernel 4.0.4 with attachment 178001 [details]: HDMI image works, audio does not.
Can you bisect when audio stopped working and open a new bug?
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #17 from Thomas v10lator@myway.de --- @Alex Deucher there you go: https://bugzilla.kernel.org/show_bug.cgi?id=99041
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #18 from Thomas v10lator@myway.de --- *** Bug 98651 has been marked as a duplicate of this bug. ***
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #19 from Robin Bankhead kernel@headbank.co.uk --- (In reply to Alex Deucher from comment #10)
Created attachment 178001 [details] possible fix
Does the attached patch help?
Nope, just built 4.0.5-gentoo which has this patch applied, laptop LCD still goes dark when radeondrmfb takes over from simplefb (or around that point, when the display would normally flicker at the changeover).
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #20 from Robin Bankhead kernel@headbank.co.uk --- Created attachment 179891 --> https://bugzilla.kernel.org/attachment.cgi?id=179891&action=edit dmesg from linux-4.0.5-gentoo on PALM/Wrestler APU
https://bugzilla.kernel.org/show_bug.cgi?id=98751
--- Comment #21 from Robin Bankhead kernel@headbank.co.uk --- APU model name: AMD E2-1800 APU with Radeon(tm) HD Graphics
PCI ID: 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wrestler [Radeon HD 7340]
Reverting the commit in OP solves it for me.
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