[Gentoo] DisplayManager userland crashing, no displays

[mikopp]

any update on this? did the last logs reveal anything?

[mikopp]

I ran with the new version 138. Good news its no longer crashing, but no display in xrandr, no provider. dmesg seems to indicate that the display is not found although I get the correct edid logged again.

new logs and new dmesg

[maggu2810]

So, I am own a D3100 and using Gentoo, too.

After building and loading evdi.ko and starting DisplayLinkManager I got a few lines in my system log (after a few seconds):

Loading evdi.ko

Sep 02 22:41:13 m3800 kernel: [ ] evdi_init Initialising logging on level 5

After starting DisplayLinkManager

Sep 02 22:41:23 m3800 kernel: [D] add_store  increasing device count to 1
Sep 02 22:41:23 m3800 kernel: [D] evdi_crtc_init drm_crtc_init: 0
Sep 02 22:41:23 m3800 kernel: [D] evdi_encoder_init drm_encoder_init: 0
Sep 02 22:41:23 m3800 kernel: [D] evdi_detect Painter is disconnected
Sep 02 22:41:23 m3800 kernel: evdi evdi.0: No connectors reported connected with modes
Sep 02 22:41:23 m3800 kernel: [drm] Cannot find any crtc or sizes - going 1024x768
Sep 02 22:41:23 m3800 kernel: evdi evdi.0: fb1: evdidrmfb frame buffer device
Sep 02 22:41:23 m3800 kernel: [drm] evdi: evdi_stats_init
Sep 02 22:41:23 m3800 kernel: [drm] Initialized evdi 1.0.68 19700101 on minor 1

Then I started my DisplayManager / X and got this two lines in my log:

Sep 02 22:41:35 m3800 kernel: [W] evdi_painter_disconnect (dev=0) An unknown connection to ffff880461ca2e00 tries to close us - ignoring
Sep 02 22:41:36 m3800 kernel: [W] evdi_painter_disconnect (dev=0) An unknown connection to ffff88046d2cf800 tries to close us - ignoring

In the directory of the DisplayLinkManager new files have been added:

• DisplayLinkManager.log
• DLInstrumentationDirectoryLock
• FirmwareTrace.log
• FirmwareTrace.old.log
• PmMessagesPort_in
• PmMessagesPort_out

In the top-directory I also got a file that seems to be the EDID of my attached monitor:

• x64Hanns.G HG281_HSD1CF3-922LB3QA01119.edid

But I do not know at which time this file is created.

So, no further success, the monitor is kept blank.
Could I provide you further log stuff (files, ...)?

[maggu2810]

I would like to use strace to show what is going on.
So I stopped the running DisplayLinkManager while X is still running and started it again using "strace -f ...".
Now I see an additional provider and could use xrandr to activate the monitor output.

So at least it is working, but need to have a further look at the order of the commands.

Log:

Sep 02 23:05:00 m3800 kernel: [D] add_store  increasing device count to 2
Sep 02 23:05:00 m3800 kernel: [D] evdi_crtc_init drm_crtc_init: 0
Sep 02 23:05:00 m3800 kernel: [D] evdi_encoder_init drm_encoder_init: 0
Sep 02 23:05:00 m3800 kernel: [D] evdi_detect Painter is disconnected
Sep 02 23:05:00 m3800 kernel: evdi evdi.1: No connectors reported connected with modes
Sep 02 23:05:00 m3800 kernel: [drm] Cannot find any crtc or sizes - going 1024x768
Sep 02 23:05:00 m3800 kernel: evdi evdi.1: fb2: evdidrmfb frame buffer device
Sep 02 23:05:00 m3800 kernel: [drm] evdi: evdi_stats_init
Sep 02 23:05:00 m3800 kernel: [drm] Initialized evdi 1.0.68 19700101 on minor 2
Sep 02 23:05:00 m3800 kernel: [W] evdi_painter_disconnect (dev=0) An unknown connection to ffff88042a424400 tries to close us - ignoring
Sep 02 23:05:00 m3800 kernel: [W] evdi_painter_disconnect (dev=0) An unknown connection to ffff88006731ee00 tries to close us - ignoring
Sep 02 23:05:00 m3800 kernel: [D] evdi_detect Painter is disconnected
Sep 02 23:05:00 m3800 kernel: [D] evdi_detect Painter is disconnected
Sep 02 23:05:00 m3800 kernel: [D] evdi_painter_crtc_state_notify (dev=0) Notifying crtc state: 0
Sep 02 23:05:00 m3800 kernel: [D] evdi_painter_crtc_state_notify (dev=0) Notifying crtc state: 0
Sep 02 23:05:10 m3800 kernel: [W] evdi_painter_disconnect (dev=0) An unknown connection to ffff880460654200 tries to close us - ignoring
Sep 02 23:05:10 m3800 kernel: [D] evdi_painter_connect (dev=2) Connected with ffff880415c1ae00
Sep 02 23:05:10 m3800 kernel: [D] evdi_painter_connect (dev=2) Edid (3 bytes): 00 ff ff
Sep 02 23:05:10 m3800 kernel: [D] evdi_detect (dev=2) Painter is connected
Sep 02 23:05:10 m3800 kernel: [D] evdi_detect (dev=2) Painter is connected
Sep 02 23:05:10 m3800 kernel: [D] evdi_painter_get_edid (dev=2) 00 ff ff
Sep 02 23:05:50 m3800 kernel: [D] evdi_detect (dev=2) Painter is connected
Sep 02 23:05:50 m3800 kernel: [D] evdi_painter_get_edid (dev=2) 00 ff ff
Sep 02 23:06:08 m3800 kernel: [D] evdi_detect (dev=2) Painter is connected
Sep 02 23:06:08 m3800 kernel: [D] evdi_painter_get_edid (dev=2) 00 ff ff
Sep 02 23:06:08 m3800 kernel: [D] evdi_painter_mode_changed_notify (dev=2) Notifying mode changed: 1920x1200@60; bpp 32; pixel format 875713112
Sep 02 23:06:08 m3800 kernel: [D] evdi_painter_crtc_state_notify (dev=2) Notifying crtc state: 1
Sep 02 23:06:08 m3800 kernel: [D] evdi_detect (dev=2) Painter is connected
Sep 02 23:06:08 m3800 kernel: [D] evdi_painter_get_edid (dev=2) 00 ff ff

[maggu2810]

I rebooted my machine to find the simple steps:

• loading evdi kernel module before X has been started
• start X server (GNOME session at my current setup)
• start "DisplayLinkManager" (currently using root privileges)

Now xrandr shows the provider (listproviders).

$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x49 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 6 associated providers: 0 name:Intel
Provider 1: id: 0x11c cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 0 name:modesetting

After that is used

xrandr --setprovideroutputsource 1 0

and activated the output "DVI-1-0" after all (in the run before it has been named "DVI-1-1").

All fine.

[mikopp]

ok I can confirm that after loading module prior to X and of course installing the modesetting driver it works now.

[gaya]

Just elaborating in case anyone needs easier steps for systemd like me as I didn't know xrandr really well. This post got me on the right track however. I'm happy the displaylink made the effort and released a driver for the D3x because I can't work with Windows efficiently. I tried for 2 months...

If the driver is installed (in my case using a gentoo overlay from maggu2810) you can start the displaylink service with systemctl and add the "evdi" to /etc/modules-load/evdi.conf.

By guessing that you now loaded evdi and started the displaylink service automatically, you may not be able to guess what the display device is called using xrandr. The output and steps for my 3 monitor setup, both connected via HDMI on the D3100 is here:

% xrandr --listproviders                        
Providers: number : 3
Provider 0: id: 0x94 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 4 associated providers: 2 name:Intel
Provider 1: id: 0x6c cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 1 name:modesetting
Provider 2: id: 0x41 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 1 name:modesetting

% xrandr -q             
Screen 0: minimum 8 x 8, current 5760 x 1080, maximum 32767 x 32767
eDP1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 409mm x 230mm
   1920x1080     60.00*+
   1400x1050     59.98  
   1280x1024     60.02  
   1280x960      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

Now after setting the provider source:

xrandr --setprovideroutputsource 1 0
xrandr --setprovideroutputsource 2 0

I can see new devices in xrandr (DVI-2-1 and DVI-1-0):

% xrandr -q
Screen 0: minimum 8 x 8, current 5760 x 1080, maximum 32767 x 32767
eDP1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 409mm x 230mm
   1920x1080     60.00*+
   1400x1050     59.98  
   1280x1024     60.02  
   1280x960      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
DVI-2-1 connected 1920x1080+3840+0 (normal left inverted right x axis y axis) 575mm x 323mm
   1920x1080     60.00*+
   1024x768      75.08    70.07    60.00  
   800x600       75.00    60.32  
   640x480       75.00    60.00  
   720x400       70.08  
DVI-1-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 575mm x 323mm
   1920x1080     60.00*+
   1024x768      75.08    70.07    60.00  
   800x600       75.00    60.32  
   640x480       75.00    60.00  
   720x400       70.08  
  1024x768 (0x45) 65.000MHz
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  48.36KHz
        v: height  768 start  771 end  777 total  806           clock  60.00Hz
  800x600 (0x47) 40.000MHz
        h: width   800 start  840 end  968 total 1056 skew    0 clock  37.88KHz
        v: height  600 start  601 end  605 total  628           clock  60.32Hz
  1920x1080 (0x42) 148.500MHz
        h: width  1920 start 2008 end 2052 total 2200 skew    0 clock  67.50KHz
        v: height 1080 start 1084 end 1089 total 1125           clock  60.00Hz
  1024x768 (0x43) 78.800MHz
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock  60.06KHz
        v: height  768 start  769 end  772 total  800           clock  75.08Hz
  1024x768 (0x44) 75.000MHz
        h: width  1024 start 1048 end 1184 total 1328 skew    0 clock  56.48KHz
        v: height  768 start  771 end  777 total  806           clock  70.07Hz
  1024x768 (0x45) 65.000MHz
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  48.36KHz
        v: height  768 start  771 end  777 total  806           clock  60.00Hz
  800x600 (0x46) 49.500MHz
        h: width   800 start  816 end  896 total 1056 skew    0 clock  46.88KHz
        v: height  600 start  601 end  604 total  625           clock  75.00Hz
  800x600 (0x47) 40.000MHz
        h: width   800 start  840 end  968 total 1056 skew    0 clock  37.88KHz
        v: height  600 start  601 end  605 total  628           clock  60.32Hz
  640x480 (0x48) 31.500MHz
        h: width   640 start  656 end  720 total  840 skew    0 clock  37.50KHz
        v: height  480 start  481 end  484 total  500           clock  75.00Hz
  640x480 (0x49) 25.200MHz
        h: width   640 start  656 end  752 total  800 skew    0 clock  31.50KHz
        v: height  480 start  490 end  492 total  525           clock  60.00Hz
  720x400 (0x4a) 28.320MHz
        h: width   720 start  738 end  846 total  900 skew    0 clock  31.47KHz
        v: height  400 start  412 end  414 total  449           clock  70.08Hz

And finally use those monitors:

xrandr --output DVI-1-0 --auto --right-of eDP1
xrandr --output DVI-2-1 --auto --left-of eDP1