Attemting to compile drm_i915 as built in instead of a module causes the following stream of link errors: x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_set_suspend': (.text+0x2a8): undefined reference to `fb_set_suspend' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_resume_worker': drm_fb_helper.c:(.text+0x2c5): undefined reference to `fb_set_suspend' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_unregister_fbi': (.text+0x2e4): undefined reference to `unregister_framebuffer' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_read': (.text+0x2f6): undefined reference to `fb_sys_read' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_fini': (.text+0x8b5): undefined reference to `framebuffer_release' x86_64-pc-linux-gnu-ld: (.text+0x954): undefined reference to `fb_dealloc_cmap' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_alloc_fbi': (.text+0xaf0): undefined reference to `framebuffer_alloc' x86_64-pc-linux-gnu-ld: (.text+0xb0e): undefined reference to `fb_alloc_cmap' x86_64-pc-linux-gnu-ld: (.text+0xb1d): undefined reference to `framebuffer_release' x86_64-pc-linux-gnu-ld: (.text+0xb81): undefined reference to `fb_dealloc_cmap' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `__drm_fb_helper_initial_config_and_unlock': drm_fb_helper.c:(.text+0xef2): undefined reference to `register_framebuffer' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_generic_probe': drm_fb_helper.c:(.text+0x1178): undefined reference to `fb_deferred_io_init' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_set_suspend_unlocked': (.text+0x125a): undefined reference to `fb_set_suspend' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_cfb_imageblit': (.text+0x18de): undefined reference to `cfb_imageblit' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_cfb_copyarea': (.text+0x190e): undefined reference to `cfb_copyarea' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_cfb_fillrect': (.text+0x193e): undefined reference to `cfb_fillrect' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_imageblit': (.text+0x196e): undefined reference to `sys_imageblit' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_copyarea': (.text+0x199e): undefined reference to `sys_copyarea' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_fillrect': (.text+0x19ce): undefined reference to `sys_fillrect' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_write': (.text+0x19fe): undefined reference to `fb_sys_write' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_fb_fillrect': drm_fb_helper.c:(.text+0x1ae4): undefined reference to `cfb_fillrect' x86_64-pc-linux-gnu-ld: drm_fb_helper.c:(.text+0x1b03): undefined reference to `sys_fillrect' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_fb_imageblit': drm_fb_helper.c:(.text+0x1b34): undefined reference to `cfb_imageblit' x86_64-pc-linux-gnu-ld: drm_fb_helper.c:(.text+0x1b53): undefined reference to `sys_imageblit' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_fb_copyarea': drm_fb_helper.c:(.text+0x1b84): undefined reference to `cfb_copyarea' x86_64-pc-linux-gnu-ld: drm_fb_helper.c:(.text+0x1ba3): undefined reference to `sys_copyarea' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_cleanup': drm_fb_helper.c:(.text+0x1bde): undefined reference to `fb_deferred_io_cleanup' x86_64-pc-linux-gnu-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_client_unregister': drm_fb_helper.c:(.text+0x1c79): undefined reference to `unregister_framebuffer' make: *** [Makefile:1183: vmlinux] Error 1 Reproducible: Always Steps to Reproduce: 1. Use genkernel 2. Try to compile i915 as built in Actual Results: link error Expected Results: A built kernel I suspect some sort of dependency glitch in the kernel's module information.
Created attachment 747270 [details] emerge --info
Created attachment 747273 [details] kernel config where it builds successfully
Created attachment 747276 [details] kernel config where it chokes on a link error Also, this may be a bug in genkernel itself, but when I used "--no-clean" to minimize rebuild work to test the bad config again, the failed compilation didn't cause genkernel to stop. make: *** [Makefile:1183: vmlinux] Error 1 * Shall copy new kernel image, symlinks not being handled by genkernel. * Actual image file '/boot/vmlinuz-5.14.14-gentoo-x86_64' does exist. * Actual old image file '/boot/vmlinuz-5.14.14-gentoo-x86_64.old' does NOT exist. * Same base version (vmlinuz-5.14.14-gentoo-x86_64). * Moving '/boot/vmlinuz-5.14.14-gentoo-x86_64' to '/boot/vmlinuz-5.14.14-gentoo-x86_64.old' ... * Copying '/usr/src/linux/arch/x86_64/boot/bzImage' to '/boot/vmlinuz-5.14.14-gentoo-x86_64' ... * Shall copy new System.map image, symlinks not being handled by genkernel. * Actual image file '/boot/System.map-5.14.14-gentoo-x86_64' does exist. * Actual old image file '/boot/System.map-5.14.14-gentoo-x86_64.old' does NOT exist. * Same base version (System.map-5.14.14-gentoo-x86_64). * Moving '/boot/System.map-5.14.14-gentoo-x86_64' to '/boot/System.map-5.14.14-gentoo-x86_64.old' ... * Copying '/usr/src/linux/System.map' to '/boot/System.map-5.14.14-gentoo-x86_64' ... * >> Compiling 5.14.14-gentoo-x86_64 modules ...
I was able to fix this by setting CONFIG_FB to Y instead of M
Created attachment 747495 [details, diff] Patch to fix CONFIG_FB dependency Can you apply this patch and report back ?
It works
Uh, jumped the gun. The patch makes it compile, but leaving CONFIG_FB as a module causes a complete blackout on the screen on boot.
(In reply to Raymond Jennings from comment #7) > Uh, jumped the gun. > > The patch makes it compile, but leaving CONFIG_FB as a module causes a > complete blackout on the screen on boot. no console ? Anything in dmesg ? or are you booting into a window manager?
This patch is in 5.14.19 and 5.15.3
(In reply to Mike Pagano from comment #8) > (In reply to Raymond Jennings from comment #7) > > Uh, jumped the gun. > > > > The patch makes it compile, but leaving CONFIG_FB as a module causes a > > complete blackout on the screen on boot. > > no console ? > > Anything in dmesg ? or are you booting into a window manager? Early in the boot process, before the window manager even starts. Timing seems to be right when the framebuffer activates and takes over for the vga console
