| Summary: | [BSW] Pentium N3700, after boot DisplayPort signal blank/black (edit: for some resolutions, it seems) | ||||||||||||
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| Product: | DRI | Reporter: | mattias.slabanja | ||||||||||
| Component: | DRM/Intel | Assignee: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||||||
| Status: | CLOSED WORKSFORME | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||||||
| Severity: | normal | ||||||||||||
| Priority: | medium | CC: | intel-gfx-bugs | ||||||||||
| Version: | DRI git | ||||||||||||
| Hardware: | x86-64 (AMD64) | ||||||||||||
| OS: | Linux (All) | ||||||||||||
| Whiteboard: | ReadyForDev | ||||||||||||
| i915 platform: | BSW/CHT | i915 features: | display/DP | ||||||||||
| Attachments: |
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Created attachment 125245 [details]
dmesg from normal fedora kernel
As a reference, I attached dmesg from the normal fedora kernel
Just to exclude the possibility of faulty hardware, I tested running windows 10 from a usb-stick. Testing both the default "microsoft basic display adapter" and intel's "Intel (R) HD Graphics" drivers, I did not encounter any problems with the graphics. Both drivers seemed to work without any problems. Found bug https://bugs.freedesktop.org/show_bug.cgi?id=93198 (which reported that resolutions larger than 1920x1080 wasn't working through DP). It seems I experience the same, or a similar behavior. In my setup, the monitor's native resolution is 2560x1440. If, using xrandr, lowering the DP resolution to e.g. 1920x1200 or 1920x1080, the DP signals starts working. Setting the resolution back to 2560x1440 again results in a black screen. As far as I can tell, this is reproducible and repeatable. Sorry Mattias for long time before getting back to you. Is this problem still valid? (In reply to Jari Tahvanainen from comment #4) > Sorry Mattias for long time before getting back to you. Is this problem > still valid? My guess is yes, but I'll try whether the latest drm-intel-nightly work any better then before. Created attachment 130169 [details] dmesg from drm-nightly kernel I uploaded a new dmesg dump from a run with kernel option "drm.debug=0x1e". Summary: I booted computer (in this case, two monitors attached, one DP and one HDMI) with drm.debug=0x1e. After boot, when reaching gdm login, DP-monitor goes black (similar as before). Logging in to the computer via ssh, and, using xrandr, changing DP mode to 1920x1080, make DP-monitor start showing gdm login screen. Kernel version used: """commit d2ceef096ea6215af6a46a98ad5103d4d98bcb58 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Sat Mar 11 11:52:09 2017 +0100 drm-tip: 2017y-03m-11d-10h-51m-17s UTC integration manifest """ Hello Mattias, Sorry for the delay, could you please test on latest drm-tip and share the results? It seems that this includes various patches for DP that could have fixed the problem already. Thank you. Created attachment 133092 [details] dmesg from drm-nightly Added dmesg from drm-nightly kernel built from """commit bd19696b0fe9ea167b685fe65ee2e1195e688cfd Author: Archit Taneja <architt@codeaurora.org> Date: Fri Jul 28 09:44:33 2017 +0530 drm-tip: 2017y-07m-28d-04h-11m-30s UTC integration manifest """ Booted with command line parameter drm.debug=0x1e. Kernel build process, make oldconfig (starting from latest fedora 25 kernel config), make rpm. Most recent test was conducted in a similar fashion as before, and the results are as before. Two screens connected (via HDMI and DP). During inital boot, both screens are showing some output. When reaching gdm, DP-screen goes black. (xrandr run via ssh-session) xrandr --output DP2 --mode 1920x1200 makes DP-screen show picture again xrandr --output HDMI3 --off disables HDMI-screen, does not affect DP-screen xrandr --output DP2 --mode 2560x1440 DP-screen goes black xrandr --output DP2 --mode 1920x1200 DP-screen show picture again Output from xrandr command: Screen 0: minimum 8 x 8, current 1920 x 1200, maximum 32767 x 32767 DP1 disconnected (normal left inverted right x axis y axis) DP2 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 710mm x 400mm 2560x1440 59.95 + 1920x1200 59.95* 1920x1080 60.00 60.00 50.00 50.00 59.94 1920x1080i 60.00 50.00 59.94 1680x1050 59.95 1280x1024 75.02 60.02 1440x900 74.98 59.89 1280x960 60.00 1280x720 60.00 50.00 59.94 1024x768 75.03 60.00 800x600 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 72.81 66.67 60.00 59.94 720x400 70.08 DP3 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) HDMI2 disconnected (normal left inverted right x axis y axis) HDMI3 connected (normal left inverted right x axis y axis) 1920x1200 59.95 + 1600x1200 60.00 1280x1024 75.02 60.02 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 640x480 75.00 59.94 720x400 70.08 VIRTUAL1 disconnected (normal left inverted right x axis y axis) (In reply to mattias.slabanja from comment #9) > Hello again, Thanks for the update and the invested time, if any other information for this bug is needed, it will be posted in the comments below. First of all. Sorry about spam. This is mass update for our bugs. Sorry if you feel this annoying but with this trying to understand if bug still valid or not. If bug investigation still in progress, please ignore this and I apologize! If you think this is not anymore valid, please comment to the bug that can be closed. If you haven't tested with our latest pre-upstream tree(drm-tip), can you do that also to see if issue is valid there still and if you cannot see issue there, please comment to the bug. Closing, please re-open if still occurs. |
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Created attachment 125244 [details] dmesg from drm-intel-nightly kernel: drm-intel-nightly 2016-07-21 (0042917de891b1783da8efd312f46a0a306ed7d5) OS: Fedora 24 architecture: x86_64 hardware: ASRock N3700-ITX (BIOS version 1.7) DisplayPort signal working during grub and boot, but goes "black" once reaching gdm. It is the same behavior when using normal fedora kernel, or latest drm-intel-nightly (dmesg with drm.debug=0x1e attached). This seems to happen after every reboot. One thing with the "black screen" which I find peculiar, is that the signal seems somehow borked. It's not totally "no signal", the monitor continue to use the DP input, but it's also not anything to display so the monitor goes into some sleepish mode (this "black screen" state then effectively prohibit any of the monitors OSD menus to work for as long as the DP is connected). If booting with additional kernel parameters "nomodeset i915.modeset=0", the DisplayPort signal seems to mostly work; I can see the gdm login screen, and I can login. When hitting enter at the login screen, I then experience a screen freeze behavior which can be "resolved" by hitting Ctrl-Alt-F2 (which, instead of, as I normally would expect, giving me the text terminal, sort of "refreshes the state of the screen" after which, the login proceeds as normal).