Go Back   DisplayLink Forum > DisplayLink Graphics Technology > Linux and Open Source

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-01-2015, 02:25 AM   #1
cid
Junior Member
 
Join Date: Nov 2015
Posts: 1
Default DisplaylinkManager: Hive format not recognized

Hi,

I've tried the displaylink driver 1.0.138 on my Arch Linux box with kernels 3.18, 4.1 and 4.2 but the DisplaylinkManager crashes everytime a few seconds after starting with the following error message:


terminate called after throwing an instance of 'dl::sys::Failure'
what(): Hive format not recognised


What does this mean? Any help are welcome.

Regards,
Cid
cid is offline   Reply With Quote
Old 11-02-2015, 10:19 AM   #2
Szymon
DisplayLink Tech Support
 
Szymon's Avatar
 
Join Date: Feb 2010
Posts: 55
Default

Hello cid,

Thanks for contacting. If you could verify first if your setup meets the requirement listed here:
http://support.displaylink.com/knowl...ware-on-ubuntu

This possibly might help. If you still see the problem please gather logs as described in this article:
http://support.displaylink.com/knowl...rticles/757047

and then attach the zip replying to this thread.

Thanks,
Szymon
Szymon is offline   Reply With Quote
Old 02-10-2016, 08:45 AM   #3
deztructor
Junior Member
 
Join Date: Feb 2016
Posts: 1
Default The bug root cause and workaround

Everything is quite simple: the reason is the bug in the DisplayLinkManager binary blob, it creates /root/.dl.xml once (resembling m$ windows registry hive?) and doesn't validate it properly later as also does not catch exceptions, just aborts. So, if it saved empty /root/.dl.xml, it fails. The workaround is to delete this file before running DisplayLinkManager. Also, it will help in the case if usb tree structure is changed and it can't find displays.

There is also a second bug in the driver, frequently preventing xrandr from being executed. DPI resolution is improperly set to the totally wrong value (minimal signed 32-bit integer value) and xrandr doesn't check the DPI value validity and aborts with FPE.
deztructor is offline   Reply With Quote
Reply

Tags
displaylinkmanager, format, hive, linux

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 12:43 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.