Hello! Currently testing the new Bullseye release (using firmware-bullseye-DI-rc2-amd64-netinst.iso) and see a strange phenomenon on a HP Proliant DL380 G7 server.
During boot, the following messages show up in the console: [63.063844] pcc_cpufreq_init: Too many CPUs, dynamic performance scaling disabled [63.063895] pcc_cpufreq_init: Try to enable another scaling driver through BIOS settings [63.063943] pcc_cpufreq_init: and complain to the system vendor According to https://patchwork.kernel.org/project/linux-pm/patch/5423012.zznfdyd...@aspire.rjw.lan/ this is a Kernel patch from July 2018. According to Andreas Herrmann, the settings can be defined in the HP server BIOS: Power Management -> Advanced Power Options -> Collaborative Power Control = enabled This is active (is the default I believe). The Power Regulator is set to "Dynamic Power Savings Mode". After these messages show up on the console, no login prompt appears. No network started. The server seems frozen - doesn't even react to CTRL+ALT+DEL on the console anymore. Not sure if this is caused by cpufreq or something else though. This boot problem happened on 2 out of 3 server boots. Is this a bug in Bullseye? thx for any hints.
