4 ms·

I run desktop linux via postmarketOS on a Lenovo Duet 5 (Snapdragon 7c). It isn't the most powerful device and the webcam doesn't work but other than that it wo

I run desktop linux via postmarketOS on a Lenovo Duet 5 (Snapdragon 7c). It isn't the most powerful device and the webcam doesn't work but other than that it works well and battery life is excellent

fransje26 11mo ago
> the webcam doesn't work But.. ..why? Of all things, I would have expected the webcam to not be cpu-related..
- avhception 11mo ago
  IIRC, it's because the ARM designs tend to use camera modules that come from smartphone-land. Cameras used on x86-64 usually just work using that usb webcam standard driver (what is that called again? uvcvideo?). But these smartphone-land cameras don't adhere to that standard, they probably don't connect using USB. They are designed to be used with the SoC vendor's downstream fork of Android or whatever, using proprietary blobs.
  - viraptor 11mo ago
    A similar thing is happening in Intel land recently, where the cameras use ipu6 / ipu7 chips rather than dumping simple frames over USB. But this way we get a higher resolution / quality at least.
  - throwaway173738 11mo ago
    It’s usually MIPI or some variant. There’s probably a way to enable the video stream but you also have to talk to the control module itself which is on a different bus.
ara07 11mo ago
What about the audio ? The documentation says audio doesnt work as well. did you find a way to solve it or it came solved when you installed ?
- mattan138 11mo ago
  I recently installed PostmarketOS and ran into the audio issue as well. It is resolved by editing the rt5682-max98357a/HiFi.conf file to change the playback channels from 2 to 4. There is extra bit to clean up, but that is the simple fix. See here: https://github.com/velvet-os/imagebuilder/discussions/240#discussioncomment-10690792 https://github.com/velvet-os/imagebuilder/discussions/240#di...

4 ms·

I run desktop linux via postmarketOS on a Lenovo Duet 5 (Snapdragon 7c). It isn't the most powerful device and the webcam doesn't work but other than that it wo

by hmlwilliams 11mo ago

I run desktop linux via postmarketOS on a Lenovo Duet 5 (Snapdragon 7c). It isn't the most powerful device and the webcam doesn't work but other than that it works well and battery life is excellent

fransje26 11mo ago
> the webcam doesn't work But.. ..why? Of all things, I would have expected the webcam to not be cpu-related..
- avhception 11mo ago
  IIRC, it's because the ARM designs tend to use camera modules that come from smartphone-land. Cameras used on x86-64 usually just work using that usb webcam standard driver (what is that called again? uvcvideo?). But these smartphone-land cameras don't adhere to that standard, they probably don't connect using USB. They are designed to be used with the SoC vendor's downstream fork of Android or whatever, using proprietary blobs.
  - viraptor 11mo ago
    A similar thing is happening in Intel land recently, where the cameras use ipu6 / ipu7 chips rather than dumping simple frames over USB. But this way we get a higher resolution / quality at least.
  - throwaway173738 11mo ago
    It’s usually MIPI or some variant. There’s probably a way to enable the video stream but you also have to talk to the control module itself which is on a different bus.
ara07 11mo ago
What about the audio ? The documentation says audio doesnt work as well. did you find a way to solve it or it came solved when you installed ?
- mattan138 11mo ago
  I recently installed PostmarketOS and ran into the audio issue as well. It is resolved by editing the rt5682-max98357a/HiFi.conf file to change the playback channels from 2 to 4. There is extra bit to clean up, but that is the simple fix. See here: https://github.com/velvet-os/imagebuilder/discussions/240#discussioncomment-10690792 https://github.com/velvet-os/imagebuilder/discussions/240#di...