On Tue, 21 Mar 2023 17:14:44 -0400 "Steven A. Falco" <stevenfalco@xxxxxxxxx> wrote: > I think I'm finally getting somewhere with this problem. > > My motherboard has a built-in VGA interface, which shows up as > "astdrmfb" on fb0. My AMD video card is "amdgpudrmfb" on fb1. > > For some reason, the kernel uses fb1 for the graphical desktop, but > when I type Ctrl-Alt-F3 it switches to the VGA interface on fb0. > > So my question is now probably simpler - I need to find a way to tell > the kernel to ignore fb0 completely, and just use fb1 for everything. > > I'll do some searching to see if I can figure that out, but if > someone knows off the top of their head how to force a framebuffer to > be ignored, I'd appreciate it. Is there a way to turn off the fb0 in the BIOS? Hit F2 or Del to get into the bios while booting. Yours might be different, but I think these are pretty standard. Check the frame buffer configs in your kernel, /boot/config*. Mine are CONFIG_SYSFB=y CONFIG_SYSFB_SIMPLEFB=y CONFIG_DRM_FBDEV_EMULATION=y CONFIG_DRM_FBDEV_OVERALLOC=200 CONFIG_FB_CMDLINE=y CONFIG_FB_NOTIFY=y CONFIG_FB=y CONFIG_FB_DDC=m CONFIG_FB_CFB_FILLRECT=y CONFIG_FB_CFB_COPYAREA=y CONFIG_FB_CFB_IMAGEBLIT=y CONFIG_FB_SYS_FILLRECT=m CONFIG_FB_SYS_COPYAREA=m CONFIG_FB_SYS_IMAGEBLIT=m CONFIG_FB_SYS_FOPS=m CONFIG_FB_DEFERRED_IO=y CONFIG_FB_BACKLIGHT=m CONFIG_FB_MODE_HELPERS=y CONFIG_FB_VGA16=m CONFIG_FB_VESA=y CONFIG_FB_RADEON=m CONFIG_FB_RADEON_I2C=y CONFIG_FB_RADEON_BACKLIGHT=y CONFIG_FB_SIMPLE=m but I run a custom kernel, so yours could be significantly different. You could compare a grep of the f38 kernel config that works with a grep of the f37 kernel config that doesn't to see if there is a difference in their framebuffer configuration. _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
