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Brailliant BI driver does not work over Bluetooth in Windows 10 #5195
Comments
Comment 1 by jteh on 2015-07-05 23:28 How do you know the correct COM port is recognised? I assume you tried manually running the code in the _getPorts function, as the driver doesn't log attempted ports. Do you see anything from the driver at log level debug warning? |
Comment 2 by dkager on 2015-07-31 10:28 |
Comment 3 by jteh on 2015-08-09 23:29
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Comment 4 by dkager on 2015-08-10 13:59
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Comment 5 by jteh on 2015-08-11 00:51 The only thing I can think is that for some reason, the display seems to respond more slowly in Windows 10. Can you try this?
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Comment 6 by dkager on 2015-08-12 09:01 Incidentally, using SuperNova on Windows 7 it also fails to activate the display half the time. Either the driver has problems or this display is a bit weird. I'm guessing the latter since Bluetooth doesn't need USB drivers. |
Comment 7 by jteh on 2015-10-19 05:13 |
Comment 8 by dkager on 2015-10-26 20:28 |
Comment 9 by bramd on 2015-10-26 22:15 However, on the same machine a few weeks ago it worked. So, I don't see a pattern yet. |
@dkager, @bramd: I borrowed one of these displays while working on #5612. I wasn't able to reproduce this issue both with and without the changes from #5612. However, #5612 does tighten some things up a bit, so it may have improved things. It's also possible it was improved by a Windows Update; who knows given Microsoft's pathetic lack of documentation on updates. Anyway, unless you can still reproduce this, I think I'll just close this. Note that I don't have the display any more. |
Connecting the BI 40 through USB worked straight away without custom driver installation, but...
After that my thumb keys stopped working but braille output was unaffected. Choosing the braille display again from the settings fixed it. |
I'm confused. That traceback is serial, not HID, so that means you
should have needed a custom driver. Or was this exception when connected
via Bluetooth?
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This was USB, but with the slightly older firmware that doesn’t yet do HID I think. Maybe Windows 10 knows where to get a driver? It hasn’t happened since yesterday, so seems a rare thing. From: James Teh [mailto:notifications@github.com] I'm confused. That traceback is serial, not HID, so that means you — |
Regarding the serial error in the comment above: Switching to the new firmware with HID support should avoid this problem. I'll probably upgrade soon, but wanted to document my findings in case it is of benefit to other serial displays. Would Bluetooth be affected? |
Would you mind filing a separate issue for this exception/input failure? It's definitely not specific to the Brailliant. Thanks. Btw, unless there's been another firmware release since December, I wouldn't recommend using Brailliant HID just yet. There are serious bugs in that mode (which I've reported to Humanware). Among other things, in HID mode, your display won't charge via USB while powered on. There's also slightly increased latency for key presses in HID mode. And I can't remember the exact details, but I encountered an issue where the display seems to hang when powered down and you have to force reset it. IMO, the QA on that release was utterly atrocious (which I also pointed out to Humanware, if a little more diplomatically). |
Also, are you seeing any issues specific to the Brailliant and Bluetooth now? If not, I think we can close this. |
I mainly use a desktop PC without Bluetooth, but I believe @bramd has recent experience. |
@jcsteh Yes, I used this display over Bluetooth recently. I usually try to prevent this due to latency and sluggishness. However, this seems to be related to the device/firmware and not NVDA specific. There are a few BT issues with firmware 2.0.15, which are all firmware related. I'll document them here:
In short, yes, I think we can close this issue and hope there will be new firmware that will get some more QA and testing. |
Reported by bramd on 2015-07-03 13:54
The Brailliant BI driver works fine in Windows 10 as long as the display is connected over USB. However, a connection over Bluetooth is not working. The correct COM port is recognized, but it seems the display is not responding. The traceback indicates the exception at line 127 of brailliantB.py is thrown.
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