[BRLTTY] can't read screen content

[Dave Mielke]

[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. This is why I'm not able to reproduce the problem.

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