Noralf Trønnes

Ubuntu 22.04: UBSAN: invalid-load in include/linux/dma-buf-map.h

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``` $ sudo dmesg [ 0.000000] Linux version 5.15.0-27-generic (buildd@ubuntu) (gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #28-Ubuntu SMP Thu Apr 14 04:55:28 UTC 2022 (Ubuntu...

Ubuntu 22.04: USB replug doesn't work

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Unplugging and then plugging in the adapter does not work. The display comes up as black and backlit. But when rebooting the splash comes up. This was working on Ubuntu...

(Split out from #9) Importing buffers from Nvidia GPU does not work: ``` янв 21 20:04:49 Zenith kernel: microcode: microcode updated early to revision 0xea, date = 2021-01-05 янв 21...

Looks like BE is broken in the host driver (haven't been actually verified yet). https://lore.kernel.org/dri-devel/CAKb7UvihLX0hgBOP3VBG7O+atwZcUVCPVuBdfmDMpg0NjXe-cQ@mail.gmail.com/ v4l has some info about pixel formats and how it's stored in memory: https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/pixfmt-rgb.html

The gadget needs to take the GUD_REQ_SET_DISPLAY_ENABLE state into account when COMMITing state. It needs to set property crtc.ACTIVE=0 in gud_gadget_req_set_state_check() if not enabled. Failing test: https://github.com/notro/gud/blob/024402ba08a7534768000b78655c6c4b13240cdd/tests/test_properties.py#L18-L39

There is support for ROCK Pi 4a board in this repo, but since I have very limited time to spend on testing and maintenance, I haven't released an image.

Trying a multi transfer SPI message results in the driver stopping to work. A reload of the driver/module is needed. The vanilla drivers spi-bcm2708 and spi-bcm2835 can handle this. I...

GUD_PIXEL_FORMAT_ARGB8888 should be deprecated, doesn't work

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[GUD_PIXEL_FORMAT_ARGB8888](https://elixir.bootlin.com/linux/latest/C/ident/GUD_PIXEL_FORMAT_ARGB8888) should never have been added (have no idea what I was thinking). GUD only supports one plane and there's no "background" color so it doesn't make any sense to...

kmsro: driver missing

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MESA does not support hardware rendering with GUD. ``` $ journalctl --no-pager --boot /usr/bin/gnome-shell Nov 23 00:49:11 fedora-1 gnome-shell[1279]: Running GNOME Shell (using mutter 44.6) as a Wayland display server...

DMA

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I have started to look at spi-bcm2835 and DMA. My FBTFT drivers are now included in raspberrypi/linux, but I need a DMA SPI driver there as well, so I can...