Samuel Thibault: > Package: release.debian.org > Severity: normal > User: release.debian....@packages.debian.org > Usertags: unblock > > Hello, > > As documented in Bug#857558, the blind users which use Vario Ultra > devices (which are becoming more and more popular) report that if they > type too fast, brltty restarts its driver, thus incurring a spurious > delay, which prevents from working for several seconds while the restart > is done, thus making working very tedious, and thus Vario Ultra unusable > with Debian. >
Hi, Ack from me; CC'ing KiBi for a d-i ack (leaving the mail quoted in for his convenience). > We have investigated with upstream, what happens is that the device > is very slow to send key press events, and it's easy to actually type > faster than what the device can send, and in that case the device does > not even have the opportunity to acknowledge the braille output updates > that brltty sends, and thus brltty gets impatient and restarts the > driver. There is nothing we can really do about it, the device is just > too slow, so in the attached uploaded changes, upstream has made the > driver ignore time out errors. This was tested by various Vario Ultra > users. > > Additionally, as documented in Bug#854295, it seems espeak-ng crashes > while being used by brltty. What we found is that this happens because > of a callback that brltty sets to follow the progress of the speech > synthesis. In the attached uploaded change, I have just disabled this > feature (which is not really used by users, only for demos), which > avoids the encountered crashes. We'll have to see with upstream brltty > and espeak-ng how this can be properly fixed, but that will probably be > quite involved, while we can just disable this feature for Stretch. > > Samuel > > unblock brltty/5.4-7 > > [...] ~Niels
