[BRLTTY] BRLTTY freeze when switching workspaces in XFCE with Modular Evolution display

[Dave Mielke]

[quoted lines by Halim Sahin on 2026/01/20 at 09:04 +0100]

>At the office I am using Ubuntu 24.04 LTS. The Braille display is a
>Modular Evolution. The desktop environment is XFCE. BRLTTY is running as
>a user process for the terminal, using the a2 screen driver.

Which version of brltty are you using?

I can answer questions about brltty itself but am not a GUI user so can't add any insights based on experience with that environment and/or xfce. I'm hoping that others will comment on these.

>Which debug levels should I enable in brltty.conf to generate meaningful
>logs for debugging this problem?

The first thing you should be sure of is to capture logs from both brltty instances, i.e. the main one and the a2 one. Make sure that each is writing to a different log file.

The log categories should be: debug,brldrv,server,usb,inpkts,outpkts

Note that I've assumed you're using USB. If you're using Bluetooth then enable bt rather than usb.

Also, please let us know at what time the hang occurred so that we can more easily find the right place in both logs.

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