On 01.03.21 10:54, Arnd Bergmann wrote: > On Mon, Mar 1, 2021 at 9:40 AM LinAdmin <[email protected]> wrote: >> Bullseye 64 Bit does more or less work. There arise problems when you >> install a desktop with media players which deliver audio and should give >> output to the headphone plug and HDMI. >> >> I also had to find out that all 64 Bit versions of all distributions are >> much less powerful than the 32 Bit solution of the same software. The >> benchmark by T. Kaiser shows that some performances of 64 Bit are only about >> half of the values compared to the 32 Bit installation :-( >> >> Unfortunately the Bullseye 32 Bit kernel seems not to boot, because the >> support of USB looks broken: >> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=981586 >> I just wonder why this bug has not got any answers? > Presumably nobody has tried debugging it ;-)
I have have tried debugging it and found out that USB support is not enabled. USB-Keyboard is dead and therefore no uas either. Lacking knowledge of kernel configuration I could not yet find that specific switch :-) > There is really no good reason to run a 32-bit /kernel/ on the Pi 4, > especially the version > with 8GB RAM. While the bug should get fixed in principle to make the > default kernel > work and allow installing a 32-bit distro, the best setup for this > machine (especially > the versions with less than 4GB) is to use an armhf user space with a > 64-bit kernel. Benchmarking shows that the Pi4 with 32 bit kernel has about double performance compared to 64 bit kernel!!! Regards LinAdmin
