My cmdline.txt: root=LABEL=rpi4-root rootfstype=ext4 rootwait verbose nosplash console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 net.ifnames=0 dwc_otg.lpm_enable=0 dwc_otg.fiq_fix_enable=1 fsck.repair=yes
My config.txt: [pi4] # Route interrupts to ARM cores using legacy interrupt controller (default: 0 = route via GIC-400) enable_gic=1 armstub=armstub8-gic.bin # Fix graphical glitches dtoverlay=vc4-fkms-v3d [all] # evade u-boot, just boot directly (vmlinuz has to be uncompressed!) kernel=vmlinuz initramfs initrd.img followkernel # boot in AArch64 (64-bit) mode arm_64bit=1 # GPU shared memory, default: 64 (too low might disable features) gpu_mem=32 # Energy Efficient Ethernet off dtparam=eee=off # Use red PWR LED for activity indicator dtparam=pwr_led_trigger=cpu # Use green ACT LED for MicroSD indicator dtparam=act_led_trigger=mmc0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880607 Title: Raspberry Pi 4 extremely slow file i/o after upgrade to 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1880607/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
