05-28-2016, 01:57 PM | #1 |
Junior Member
Join Date: May 2016
Posts: 1
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Ubuntu 16.04 x64/Kernel 4.4.0.22/Latest Driver Crash
EVDI is loaded (lsmod | grep evdi)
AppArmor is disabled (in fact removed) DMESG show crash when device plugged xorg reads and sees device and proper edid settings crash reads drm.h/xorg tainted error (which apparently is a regression) Here is the display link tool generated zip file |
05-31-2016, 06:32 AM | #2 | |
Junior Member
Join Date: May 2016
Posts: 4
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The kernel signing error?
I also see the modules loaded in lsmod, but nothing in xrandr or lsusb?!?
I see a complain in dmesg about: evdi: module verification failed: signature and/or required key missing - tainting kernel Is that related? Secure boot is disabled in bios Running on a Lenovo X250 /Termo Quote:
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05-31-2016, 08:19 AM | #3 |
DisplayLink Tech Support
Join Date: Feb 2010
Posts: 55
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Hello,
The problem raised by mourngrym seems to be a valid bug which is already reported internally and were able to reproduce it. Thank you. Termo, Your problem is completely different. Could please report it in a separate thread and mention what kind of DisplayLink device you are using? I don't see it anywhere connected. Szymon |
07-18-2016, 08:29 AM | #4 |
Junior Member
Join Date: Jul 2016
Posts: 4
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system crash upon unplugging of wacom dtu-1031
It happened all the times, on ubuntu 16.04 LTS, all updated, using the latest displaylink driver, downloaded 10 mins ago.
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07-20-2016, 12:27 PM | #5 |
DisplayLink Tech Support
Join Date: Feb 2010
Posts: 55
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Your device is USB 2.0 based so even installing the latest driver from DisplayLink does not change the fact it still uses the default UDL driver. What's more I see UDL on the attached trace. As a workaround you try blacklisting UDL and make sure UDEV rule (/etc/udev/rules.d/99-displaylink.rules) matches your device.
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07-21-2016, 06:35 AM | #6 |
Junior Member
Join Date: Jul 2016
Posts: 4
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HI, i'm not quite familiar with the technicalities. i tried to add the line "blacklist udl" at the bottom of /etc/modprobe.d/blacklist-framebuffer.conf, is that correct?
my 99-displaylink.rules is ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="17e9", ATTR{bNumInterfaces}=="*5", GROUP="plugdev", MODE="0660" is that correct? because i'm using a wacom dtu-1031 and i know the vendor id for wacom is 056A. I've added the blacklist udl and the problem still persists. Please let me know what should i do exactly. Thanks! |
10-13-2016, 05:54 AM | #7 |
Junior Member
Join Date: Jul 2016
Posts: 4
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ubuntu crash when usb is unplugged
I've updated to the latest displaylink driver 1.2.65, however, unplugging a displaylink device (Wacom DTU-1031) still causes the system to crash. It doesnt happen if i unplug other usb devices.
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