Package: raspi-firmware Version: 1.20210111+ds-2 Severity: normal Dear Maintainer,
Linux 5.10.x enables vc4.ko for Raspberry Pi, and it enables 4K resolution on raspi 4B. When gdm3 display manager starts, it consumes roughly 100 MB of CMA, as # grep -i cma /proc/meminfo CmaTotal: 262144 kB CmaFree: 143008 kB When CMA is insufficient, the screen becomes blank and kernel logs kernel: [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA: which is also discussed at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=968181#60 I am using CMA=256M@128M in /etc/default/raspi-firmware. The default 64M does not work for high resolution displays and 5.10 kernel. Best regards, Ryutaroh Matsumoto -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental') Architecture: arm64 (aarch64) Kernel: Linux 5.10.9 (SMP w/4 CPU threads) Kernel taint flags: TAINT_CRAP, TAINT_UNSIGNED_MODULE Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages raspi-firmware depends on: ii dosfstools 4.1-2 ii dpkg 1.20.7.1 raspi-firmware recommends no packages. raspi-firmware suggests no packages. -- Configuration Files: /etc/default/raspi-firmware changed: CONSOLES="" ROOTPART="LABEL=RASPIROOT" CMA=256M@128M -- no debconf information
