Module evdi not found in directory.

[marc-cwm]

• Are you using the latest driver? Yes.
• Are you using the latest EVDI version? Yes.
• If you are using a DisplayLink device, have you checked 'troubleshooting' on DisplayLink's website? Yes.
• Is this issue related to evdi/kernel? Do not think so.
• Linux distribution and its version: Arch Linux
• Linux kernel version: 6.10.10-zen1-1-zen
• Xorg version (if used): 1.21.1.13
• Desktop environment in use: KDE Plasma 6

I'm not sure if this is just a matter of it not being compatible, but after updating my system, the displaylink service no longer starts. After digging through logs, we eventually get:
modprobe[105853]: modprobe: FATAL: Module evdi not found in directory /lib/modules/6.10.10-zen1-1-zen

This looks like it may have started after updating to 1.14.7.r3.g59a3a86-1, but I have not been able to get this working again using an older version. This looks like it may be linked to #481 but it looks like that should have been fixed in the version I am currently on.

[SuperMeepBoy]

Can confirm. Happens to me too.

[tbalzer]

Same here.

==> dkms install --no-depmod evdi/1.14.7 -k 6.10.10-arch1-1
Error! Bad return status for module build on kernel: 6.10.10-arch1-1 (x86_64)
Consult /var/lib/dkms/evdi/1.14.7/build/make.log for more information.

The mentioned file contains a lot of errors like this, referring to a missing tests/evdi_test.h included from various files:

In file included from /var/lib/dkms/evdi/1.14.7/build/evdi_platform_dev.c:27:
/var/lib/dkms/evdi/1.14.7/build/evdi_drm_drv.h:41:10: fatal error: tests/evdi_test.h: No such file or directory
   41 | #include "tests/evdi_test.h"
      |          ^~~~~~~~~~~~~~~~~~~

[stonalampa]

Same thing happens to me 👍

[tbalzer]

I've taken more of a look into the issue. Due to the added tests, the PKGBUILD of evdi-git in Arch needed some adjustments to make those files available.

However that only shifts the problem it seems. DKMS can then build the module, however it cannot be loaded:

modprobe: ERROR: could not insert 'evdi': Unknown symbol in module, or unknown parameter (see dmesg)

However dmesg is completely silent.

Same behavior if we build from source tarball in package evdi updated to 1.14.7.

[JosemiGT]

Another one around here who has had the same problem in archlinux.

So far I have solved it by changing the evdi-git package in AUR to just evdi and with this version of the package it works.

The current evdi package in AUR that works is 1.14.6-0

[marc-cwm]

Confirmed, reverting to the 1.14.6-0 version has restored functionality, this issue seems to be limited to the 1.14.7 version.

I'm not sure which version I chose to downgrade initially where this did not work.

[stonalampa]

Also confirming that reverting to 1.14.6-0 fixes it.
Installed 1.14.6, removed 1.14.7 and rebooted.

[tbalzer]

The 1.14.6 evdi package works also for me after reboot, at least with 6.10 kernel.

I also first had issues when downgrading, but that might have been because I tried the evdi-git package with older revisions which led to issues for me.

For now I'm not updating to 6.11 then until 1.14.7 can be built.