On Sun, Aug 15, 2021 at 01:21:24PM +0200, Evelyn Pereira Souza wrote: > On 15.08.21 10:52, to...@tuxteam.de wrote: > > You also have a "2019 5k iMac"? Because that is very important in this > > context. > > Here more details about my HW: > > # inxi -Fxz > System: Host: norp Kernel: 4.19.0-17-amd64 x86_64 bits: 64 compiler: gcc > v: 8.3.0 > Console: tty 0 Distro: Debian GNU/Linux 10 (buster) > Machine: Type: Desktop System: Apple product: iMac15,1 v: 1.0 serial: > <filter> > Mobo: Apple model: Mac-42FD25EABCABB274 v: iMac15,1 serial: > <filter> UEFI: Apple > v: 431.0.0.0.0 date: 02/22/2021 > CPU: Topology: Quad Core model: Intel Core i5-4690 bits: 64 type: MCP > arch: Haswell rev: 3 > L2 cache: 6144 KiB > flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: > 27934 > Speed: 898 MHz min/max: 800/3900 MHz Core speeds (MHz): 1: 898 2: > 899 3: 898 4: 898 > Graphics: Device-1: AMD Curacao XT / Trinidad XT [Radeon R7 370 / R9 > 270X/370X] vendor: Apple > driver: N/A bus ID: 01:00.0 > Display: server: X.org 1.20.4 driver: ati,vesa unloaded: > fbdev,modesetting,radeon > tty: 101x55 > Message: Advanced graphics data unavailable in console for root. > Audio: Device-1: Intel 8 Series/C220 Series High Definition Audio > driver: snd_hda_intel > v: kernel bus ID: 00:1b.0 > Device-2: AMD Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 > Series] > driver: snd_hda_intel v: kernel bus ID: 01:00.1 > Sound Server: ALSA v: k4.19.0-17-amd64 > Network: Device-1: Broadcom Limited BCM4360 802.11ac Wireless Network > Adapter vendor: Apple > driver: bcma-pci-bridge v: N/A port: 2000 bus ID: 03:00.0 > Device-2: Broadcom Limited NetXtreme BCM57766 Gigabit Ethernet > PCIe driver: tg3 > v: 3.137 port: 2000 bus ID: 04:00.0 > IF: enp4s0f0 state: up speed: 1000 Mbps duplex: full mac: > <filter> > Drives: Local Storage: total: 1.02 TiB used: 4.50 GiB (0.4%) > ID-1: /dev/sda vendor: Apple model: HDD ST1000DM003 size: 931.51 > GiB temp: 43 C > ID-2: /dev/sdb vendor: Apple model: SSD SD0128F size: 113.00 GiB > temp: 62 C > Partition: ID-1: / size: 27.37 GiB used: 4.35 GiB (15.9%) fs: ext4 dev: > /dev/dm-1 > ID-2: /boot size: 472.6 MiB used: 60.3 MiB (12.7%) fs: ext2 dev: > /dev/sdb2 > ID-3: /home size: 81.31 GiB used: 56.1 MiB (0.1%) fs: ext4 dev: > /dev/dm-3 > ID-4: swap-1 size: 976.0 MiB used: 0 KiB (0.0%) fs: swap dev: > /dev/dm-2 > Sensors: System Temperatures: cpu: 54.0 C mobo: N/A > Fan Speeds (RPM): N/A > Info: Processes: 131 Uptime: 41m Memory: 7.73 GiB used: 247.5 MiB > (3.1%) Init: systemd > runlevel: 5 Compilers: gcc: N/A Shell: bash v: 5.0.3 inxi: 3.0.32 > > kind regards > Evelyn
I would suggest installing Debian 11 - just released - for two reasons: 1.) The software is significantly newer - it may be that the video card was initally released after the release of Debian Buster - so not so well supported. It also uses a more modern kernel - 5.10. 2.) If you use the unofficial media image including the non-free firmware https://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/current/amd64/iso-cd/firmware-11.0.0-amd64-netinst.iso the firmware detection and installation for firmware for video cards has been improved significantly. I appreciate that won't help you with Debian 10.6 but Debian 10.10 would not help much either. With every good wish, Andy Cater