This is very likely a bug in blackmagic code. The 4.8 kernel introduced CONFIG_HARDENED_USERCOPY, which adds protections to the copying of data to/from userspace. The blackmagic kernel module is out-of-tree and is probably doing something wrong, which the protections are catching.
I am not at all interested in fixing their kernel code, though this is possible if somebody has the gumption. You will have to wait until BM releases new modules, or downgrade, or perhaps try recompiling your kernel with CONFIG_HARDENED_USERCOPY unset.
Search Criteria
Package Base Details: decklink
Package Actions
| Git Clone URL: | https://aur.archlinux.org/decklink.git (read-only, click to copy) |
|---|---|
| Submitter: | alub |
| Maintainer: | goldensuneur |
| Last Packager: | goldensuneur |
| Votes: | 24 |
| Popularity: | 0.000108 |
| First Submitted: | 2015-10-03 15:38 (UTC) |
| Last Updated: | 2024-04-12 20:17 (UTC) |
Packages (2)
isopede commented on 2016-12-23 02:08 (UTC)
fthiery commented on 2016-12-10 14:54 (UTC)
Nope
Excrement commented on 2016-12-10 14:51 (UTC)
Yea, that seems like a silly solution downgrade; im using a gtx1080 and im not sure if that solution will support my video card.. ill have to check..
incidentally is this your forum post?
https://forum.blackmagicdesign.com/viewtopic.php?f=12&t=53195&p=306662&hilit=Arch+linux#p306662
fthiery commented on 2016-12-09 13:48 (UTC)
Yes, 4.4.36-1
Excrement commented on 2016-12-08 12:52 (UTC) (edited on 2016-12-10 14:52 (UTC) by Excrement)
Why do i have the sneaky suspicion they (blackmagic) dont really care and are just wanting you (the consumer) to buy their 4k card or something newer....
Using the LTS kernel means reverting from 4.8 to 4.4?
edit; guess its happening with the 4k cards as well..
fthiery commented on 2016-12-07 22:23 (UTC)
I think that reverting to an LTS kernel is probably your best bet.
fthiery commented on 2016-12-07 22:22 (UTC)
I am in contact with them, but i don't get much feedback :(
All i know is that they reproduced the issue, which is a start.
Excrement commented on 2016-12-07 21:46 (UTC)
checking in as well; module pukes (crashes) when loaded.
any idea when this will be addressed as i use this app to do some video work.
fthiery commented on 2016-12-07 10:47 (UTC)
Tried, pushed, still crashing.
disc-kuraudo commented on 2016-12-06 09:32 (UTC) (edited on 2016-12-06 09:32 (UTC) by disc-kuraudo)
They released 10.8.3 and 10.8.4, had any luck with those?
Pinned Comments
goldensuneur commented on 2020-03-02 19:00 (UTC)
I finally had time to investigate the issue. It looks like that as of 11.5, the
DesktopVideoHelper.servicehas to be running for the capture card to work properly.