[BRLTTY] can't read screen content

[Samuel Thibault]

Dave Mielke, le dim. 24 mai 2026 10:26:02 -0400, a ecrit:
> [quoted lines by Samuel Thibault on 2026/05/24 at 16:22 +0200]
> 
> >On printing \033%@ on debian 13 with a 6.12.63 kernel, I indeed get this
> >on cat-ing /dev/vcsu1:
> >
> >openat(AT_FDCWD, "vcsu1", O_RDONLY)
> >read(0, 0x12341234, 4096) = -1 ENODATA (No data available)
> >
> >so the read fails, thus why brltty fails to read the screen. It should
> >catch such error and fall back to using /dev/vcsa.
> 
> Yes, it already does that.

In my tests it doesn't.

Samuel