Bug#978025: Sound issues with the 5.10.x kernel (alsa)

2021-03-28 Thread Ryutaroh Matsumoto
>> i assume you set this option in the config.txt? This shouldn't have any >> affect for the mainline kernel / DT. > I am aware of that... I include my config.txt on RPi4B for reference... arm_64bit=1 enable_uart=1 upstream_kernel=1 kernel=vmlinuz-5.10.0-5-rt-arm64 initramfs initrd.img-5.10.0-5-rt

Bug#978025: Sound issues with the 5.10.x kernel (alsa)

2021-03-28 Thread Stefan Wahren
Hi, Am 28.03.21 um 07:58 schrieb Ryutaroh Matsumoto: >> I think the root cause of this issue is that both vc4.ko and snd_bcm2835.ko >> try to provide ALSA sinks to HDMI audio outputs from RPi. >> Why do the two drivers provide the same functionality for the same device? >> It seems nonsense. >> Th

Bug#978025: Sound issues with the 5.10.x kernel (alsa)

2021-03-27 Thread Ryutaroh Matsumoto
> I think the root cause of this issue is that both vc4.ko and snd_bcm2835.ko > try to provide ALSA sinks to HDMI audio outputs from RPi. > Why do the two drivers provide the same functionality for the same device? > It seems nonsense. > There must be some coordination between vc4.ko and snd_bcm283

Bug#978025: Sound issues with the 5.10.x kernel (alsa)

2021-03-27 Thread Ryutaroh Matsumoto
Hi all, From: Stefan Wahren Subject: Re: Sound issues with the 5.10.x kernel (alsa) Date: Mon, 8 Feb 2021 13:22:56 +0100 >> This is basically me forwarding the bug I reported on Debian's BTS: >> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=978025 >> TL;DR: I have a RPi 3B+ running pure Debia