Resolution on ttyX is way to small

[Gladdle]

I bought a new Notebook. A Lenovo Thinkpad E16. I installed Gentoo on a LUKS encrypted Harddrive, without systemd and with genkernel and grub2. GRUB2 use 2560x1600 (like it should be), then linux starts. The first text is in 2560x1600:

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>Gentoo GNU/Linux wird gebootet

Linux 6.12.16-gentoo-x86_64 wird geladen...
Initiale Ramdisk wird geladen...

And then he switched to a smaller resolution:

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>> Using the following decryption command: cryptsetup  luksOpen /dev/nvme0n1p2 r
oot
Enter passphrase for /dev/nvme0n1p2:

My /etc/default/grub contains:

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GRUB_CMDLINE_LINUX="crypt_root=/dev/nvme0n1p2 real_root=/dev/VG-Encrypted-Gentoo/LVroot rootfstype=ext4 dolvm quiet splash"
GRUB_GFXMODE=2560x1600
GRUB_GFXPAYLOAD_LINUX=keep

I'll think my kernel is compiled with the right framebuffer options, i used https://wiki.gentoo.org/wiki/Framebuffer - so here is my "dmesg | grep -i fb":

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[    2.077105] fbcon: amdgpudrmfb (fb0) is primary device
[    2.077111] fbcon: Deferring console take-over
[    2.077116] amdgpu 0000:04:00.0: [drm] fb0: amdgpudrmfb frame buffer device

and "dmesg | grep -i fram":

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[    0.249047] signal: max sigframe size: 3376
[    2.077116] amdgpu 0000:04:00.0: [drm] fb0: amdgpudrmfb frame buffer device
[    2.785320] r8169 0000:01:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko]
[    4.147931] Console: switching to colour frame buffer device 160x50

Can someone tell me what i did wrong?

[pietinger]

What happens if you add this to the kernel command line parameter?

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fbcon=font:TER16x32

(Taken from: https://docs.kernel.org/fb/fbcon.html )

[Gladdle]

What happens if you add this to the kernel command line parameter?

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fbcon=font:TER16x32

(Taken from: https://docs.kernel.org/fb/fbcon.html )

I've edit my /etc/default/grub to:

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GRUB_CMDLINE_LINUX="crypt_root=/dev/nvme0n1p2 real_root=/dev/VG-Encrypted-Gentoo/LVroot fbcon=font:TER16x32 rootfstype=ext4 dolvm quiet splash"

and did a "grub-mkconfig -o /boot/grub/grub.cfg". "xdpyinfo" and "xrandr" doesnt work on tty$, i've tried the tool fbset but the error when i start that is

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open /dev/fb0: No such file or directory

dmesg WtF?

[Spanik]

Just to make sure because from the initial question and the replies I have the idea that the OP is meaning something different:

1: the OP expects the display to have 2560x1600 but he ends up with 1920x1080 (or an other resolution with less pixels)
2: he has his demanded 2560x1600 and the text is too small to read

I understand it is issue 1.

[Gladdle]

It looks like it's a different resolution, but it also could be a bigger font size.
Currently i am confused about the /dev/fb0 error, because dmesg told me the amdgpu fb is loaded but /dev/fb does not exist...

[pietinger]

Have you enabled CONFIG_FB_DEVICE in your kernel .config?

[Gladdle]

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cat /usr/src/linux/.config | grep CONFIG_FB

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# CONFIG_FBNIC is not set
CONFIG_FB=y
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
CONFIG_FB_VGA16=y
# CONFIG_FB_UVESA is not set
CONFIG_FB_VESA=y
CONFIG_FB_EFI=y
# CONFIG_FB_N411 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIA is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_SM501 is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_IBM_GXT4500 is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
# CONFIG_FB_SIMPLE is not set
# CONFIG_FB_SSD1307 is not set
# CONFIG_FB_SM712 is not set
CONFIG_FB_CORE=y
CONFIG_FB_NOTIFY=y
# CONFIG_FB_DEVICE is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_SYS_FILLRECT=y
CONFIG_FB_SYS_COPYAREA=y
CONFIG_FB_SYS_IMAGEBLIT=y
# CONFIG_FB_FOREIGN_ENDIAN is not set
CONFIG_FB_SYSMEM_FOPS=y
CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_IOMEM_FOPS=y
CONFIG_FB_IOMEM_HELPERS=y
CONFIG_FB_SYSMEM_HELPERS=y
CONFIG_FB_SYSMEM_HELPERS_DEFERRED=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
# CONFIG_FB_SM750 is not set

It is

[Hu]

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cat /usr/src/linux/.config | grep CONFIG_FB

This is a Useless Use of Cat.

Have you enabled CONFIG_FB_DEVICE in your kernel .config?

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# CONFIG_FB_DEVICE is not set

It is

No, it is not. The question is whether it is enabled, meaning that it should be =y or in some cases =m. Your output shows it is not enabled.