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[GH-ISSUE #617] Input freezes or gets stuck, losing control for a few seconds #485

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opened 2026-05-05 06:31:02 -06:00 by gitea-mirror · 13 comments

gitea-mirror commented

2026-05-05 06:31:02 -06:00

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Originally created by @linaori on GitHub (Apr 8, 2020).
Original GitHub issue: https://github.com/debauchee/barrier/issues/617

Not sure what could be causing this or if it's even a bug, perhaps someone has pointers as I can't find any related issues on google. A lot of times, and I'm talking 10~50 times per hour, I have either of the following issues:

My key press gets stuck, making it repeat the input as if I was holding the key
I lose control over my mouse and keyboard. I could be typing and suddenly it stops responding for a few seconds and then catches up. This is particularly annoying when I want to select some code, and it just randomly stops moving my mouse

Operating Systems

Server: Win 10 (1909)

Client: Ubuntu 18.04

Barrier Version

2.3.2-snapshot-210c2b70 (server) 3 oct 2019
2.3.2-snapshot-9080ce45 (client) 10 nov 2019

I'm not sure how to get the exact same versions, as the linux version is installed via the software manager, and this gives me a newer version than available here in releases.

Steps to reproduce bug

Use the software

Other info

Connected via WiFi because Dell refuses to give support for this particular USB-C dongle, LAN not working so I can't test if that fixes it

Originally created by @linaori on GitHub (Apr 8, 2020). Original GitHub issue: https://github.com/debauchee/barrier/issues/617 Not sure what could be causing this or if it's even a bug, perhaps someone has pointers as I can't find any related issues on google. A lot of times, and I'm talking 10~50 times per hour, I have either of the following issues: - My key press gets stuck, making it repeat the input as if I was holding the key - I lose control over my mouse and keyboard. I could be typing and suddenly it stops responding for a few seconds and then catches up. This is particularly annoying when I want to select some code, and it just randomly stops moving my mouse ### Operating Systems ### Server: Win 10 (1909) Client: Ubuntu 18.04 ### Barrier Version ### 2.3.2-snapshot-210c2b70 (server) 3 oct 2019 2.3.2-snapshot-9080ce45 (client) 10 nov 2019 I'm not sure how to get the exact same versions, as the linux version is installed via the software manager, and this gives me a newer version than available here in releases. ### Steps to reproduce bug ### Use the software ### Other info ### Connected via WiFi because Dell refuses to give support for this particular USB-C dongle, LAN not working so I can't test if that fixes it

gitea-mirror

2026-05-05 06:31:02 -06:00

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gitea-mirror commented

2026-05-05 06:31:10 -06:00

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@akisman commented on GitHub (Apr 8, 2020):

I'm seeing the exact same behavior. I haven't managed to isolate the issue, but there is one scenario I can repeatedly reproduce:
Pressing left shift while holding right shift(tried it when typing on Konsole or Kate) always results in the first issue mentioned:

My key press gets stuck, making it repeat the input as if I was holding the key.

Using the hotkey assigned to switch desktops back and forth "releases" it.

Anecdotally it feels like it occurs often when typing & using shift. I haven't noticed any pattern yet on the occurrence of the second issue mentioned, in which seemingly randomly I also loose control of both keyboard & mouse.

It seems to be related to this issue on the synergy-core repository.

Operating Systems
Server: Windows 10 Pro (Build 2004)
Client: Kubuntu 18.04 (Kernel 5.3.0-45-generic)

Barrier Version
Server: 2.3.2-snapshot-210c2b70
Client: 2.3.2-snapshot-9080ce45

Other Info
Connected via gigabit ethernet

@akisman commented on GitHub (Apr 8, 2020): I'm seeing the exact same behavior. I haven't managed to isolate the issue, but there is one scenario I can repeatedly reproduce: Pressing `left shift` while holding `right shift`(tried it when typing on Konsole or Kate) always results in the first issue mentioned: > My key press gets stuck, making it repeat the input as if I was holding the key. Using the hotkey assigned to switch desktops back and forth "releases" it. Anecdotally it feels like it occurs often when typing & using shift. I haven't noticed any pattern yet on the occurrence of the second issue mentioned, in which seemingly randomly I also loose control of both keyboard & mouse. It seems to be related to [this issue](https://github.com/symless/synergy-core/issues/6487) on the _synergy-core_ repository. -- **Operating Systems** Server: Windows 10 Pro (Build 2004) Client: Kubuntu 18.04 (Kernel 5.3.0-45-generic) **Barrier Version** Server: 2.3.2-snapshot-210c2b70 Client: 2.3.2-snapshot-9080ce45 **Other Info** Connected via gigabit ethernet

gitea-mirror commented

2026-05-05 06:31:13 -06:00

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@justdeth commented on GitHub (May 7, 2020):

I'm also experiencing this issue.
Similar issue seen in synergy: https://github.com/symless/synergy-core/issues/6487

@justdeth commented on GitHub (May 7, 2020): I'm also experiencing this issue. Similar issue seen in synergy: https://github.com/symless/synergy-core/issues/6487

gitea-mirror commented

2026-05-05 06:31:15 -06:00

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@brenix commented on GitHub (May 18, 2020):

It looks like this was fixed in synergy-core. Do fixes like this typically get pulled down into barrier? I've applied this patch to my install of barrier to see if it helps, but curious if these fixes get pulled into barrier at some point..

@brenix commented on GitHub (May 18, 2020): It looks like this was fixed in synergy-core. Do fixes like this typically get pulled down into barrier? I've applied this patch to my install of barrier to see if it helps, but curious if these fixes get pulled into barrier at some point..

gitea-mirror commented

2026-05-05 06:31:17 -06:00

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@shymega commented on GitHub (May 18, 2020):

No, they don't AFAIK.

@shymega commented on GitHub (May 18, 2020): No, they don't AFAIK.

gitea-mirror commented

2026-05-05 06:31:19 -06:00

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@axtux commented on GitHub (May 19, 2020):

The issue seems to be fixed by https://github.com/symless/synergy-core/pull/6685

I have same issue: sometimes the mouse freezes and movements are delayed by a few seconds.

Operating Systems
Server: Ubuntu 18.04 (Kernel 4.15.0-99-generic)
Client: Ubuntu 18.04 (Kernel 5.3.0-51-generic)

Barrier Version
Server: barrierc 2.3.2-13-g9080ce45
Client: barriers 2.3.2-13-g9080ce45

Other Info
Connected via Ethernet cable, ping running during freeze is never higher than 1ms so this excludes eventual network issues

@axtux commented on GitHub (May 19, 2020): The issue seems to be fixed by https://github.com/symless/synergy-core/pull/6685 I have same issue: sometimes the mouse freezes and movements are delayed by a few seconds. **Operating Systems** Server: Ubuntu 18.04 (Kernel 4.15.0-99-generic) Client: Ubuntu 18.04 (Kernel 5.3.0-51-generic) **Barrier Version** Server: barrierc 2.3.2-13-g9080ce45 Client: barriers 2.3.2-13-g9080ce45 **Other Info** Connected via Ethernet cable, ping running during freeze is never higher than 1ms so this excludes eventual network issues

gitea-mirror commented

2026-05-05 06:31:21 -06:00

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@shymega commented on GitHub (May 19, 2020):

That patch applies fine to the current Barrier version. I'm not sure what the official position is about using upstream patches from Symless's Synergy core though. @walker0643 Thoughts?

@shymega commented on GitHub (May 19, 2020): That patch applies fine to the current Barrier version. I'm not sure what the official position is about using upstream patches from Symless's Synergy core though. @walker0643 Thoughts?

gitea-mirror commented

2026-05-05 06:31:23 -06:00

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@brenix commented on GitHub (May 19, 2020):

After running barriers with the upstream patch for over a day, I can confirm the issues (lag, input freezes, etc) I was seeing have been resolved.

@brenix commented on GitHub (May 19, 2020): After running barriers with the upstream patch for over a day, I can confirm the issues (lag, input freezes, etc) I was seeing have been resolved.

gitea-mirror commented

2026-05-05 06:31:26 -06:00

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@shymega commented on GitHub (May 19, 2020):

Thanks for confirming. I'm keen to get it merged, but I need to check a few factors first. Will keep this updated.

@shymega commented on GitHub (May 19, 2020): Thanks for confirming. I'm keen to get it merged, but I need to check a few factors first. Will keep this updated.

gitea-mirror commented

2026-05-05 06:31:27 -06:00

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@p12tic commented on GitHub (May 19, 2020):

I think the upstream fix is a total hack. We could as well just throw away most of the X11 event queue code :-) It will cause higher power usage on laptops even when barrier is not actively used (i.e. no event) as the event polling will be a thousand times more frequent.

@p12tic commented on GitHub (May 19, 2020): I think the upstream fix is a total hack. We could as well just throw away most of the X11 event queue code :-) It will cause higher power usage on laptops even when barrier is not actively used (i.e. no event) as the event polling will be a thousand times more frequent.

gitea-mirror commented

2026-05-05 06:31:29 -06:00

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@p12tic commented on GitHub (May 19, 2020):

I looked into this issue and have a preliminary fix that I'm testing. The problem in my case is that's the occasions when the input is stuck are very rare, maybe once an hour or so, but so far I have not seen the issue return.

@p12tic commented on GitHub (May 19, 2020): I looked into this issue and have a preliminary fix that I'm testing. The problem in my case is that's the occasions when the input is stuck are very rare, maybe once an hour or so, but so far I have not seen the issue return.

gitea-mirror commented

2026-05-05 06:31:32 -06:00

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@shymega commented on GitHub (May 19, 2020):

Hm, interesting. Mind sharing the patch so far @p12tic? Thanks 👍

@shymega commented on GitHub (May 19, 2020): Hm, interesting. Mind sharing the patch so far @p12tic? Thanks :+1:

gitea-mirror commented

2026-05-05 06:31:35 -06:00

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@p12tic commented on GitHub (May 20, 2020):

@shymega See #679. So far no freezes for a couple of days.

@p12tic commented on GitHub (May 20, 2020): @shymega See #679. So far no freezes for a couple of days.

gitea-mirror commented

2026-05-05 06:31:39 -06:00

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@linaori commented on GitHub (Aug 7, 2020):

Been running 2.3.3 for about 2.5 hours now and haven't had a single hickup yet. So far it seems the changes are working!

@linaori commented on GitHub (Aug 7, 2020): Been running 2.3.3 for about 2.5 hours now and haven't had a single hickup yet. So far it seems the changes are working!

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