Hi Andy, On Wed Jun 11, 2025 at 2:49 PM CEST, Andy Yan wrote: > The root case for the problem is now clear。
\o/ > ... > > Actually, there is another question. I still haven't figured out why > this problem doesn't occur when compiling rockchipdrm=y . Thus far I had compiled all my kernels with this: ```sh make clean cp ../config-6.14-arm64-cknow .config scripts/config --enable LOCALVERSION_AUTO scripts/config --enable DEBUG_INFO_NONE scripts/config --disable DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT make oldconfig time make -j `nproc` bindeb-pkg ``` And with ``make oldconfig`` I accepted all the defaults (during git bisect I did say 'y' to a new Rockchip related setting) Wanting to see ``DRM_ROCKCHIP=y`` for myself, I added ```sh scripts/config --enable DRM_ROCKCHIP scripts/config --enable DRM ``` before ``make oldconfig`` and built a new kernel. I can confirm I'm seeing it work now too. Attached you'll find the ``.config`` diff between the 2 builds. HTH, Diederik
root@pt2-scmi:/boot# diff -u config-6.14.0-rc1-00001-gfbe17d9b77b0 config-6.14.0-rc1-00002-gbc85fa3dec68 --- config-6.14.0-rc1-00001-gfbe17d9b77b0 2025-06-09 11:47:09.000000000 +0200 +++ config-6.14.0-rc1-00002-gbc85fa3dec68 2025-06-11 18:43:24.000000000 +0200 @@ -6193,13 +6193,12 @@ CONFIG_RC_ATI_REMOTE=m CONFIG_RC_LOOPBACK=m # CONFIG_RC_XBOX_DVD is not set -CONFIG_CEC_CORE=m +CONFIG_CEC_CORE=y CONFIG_CEC_NOTIFIER=y # # CEC support # -CONFIG_MEDIA_CEC_RC=y CONFIG_MEDIA_CEC_SUPPORT=y # CONFIG_CEC_CH7322 is not set # CONFIG_CEC_CROS_EC is not set @@ -7185,16 +7184,16 @@ CONFIG_TEGRA_HOST1X_CONTEXT_BUS=y CONFIG_TEGRA_HOST1X=m CONFIG_TEGRA_HOST1X_FIREWALL=y -CONFIG_DRM=m +CONFIG_DRM=y CONFIG_DRM_MIPI_DSI=y # CONFIG_DRM_DEBUG_MM is not set -CONFIG_DRM_KMS_HELPER=m +CONFIG_DRM_KMS_HELPER=y # CONFIG_DRM_PANIC is not set # CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS is not set # CONFIG_DRM_DEBUG_MODESET_LOCK is not set CONFIG_DRM_CLIENT=y -CONFIG_DRM_CLIENT_LIB=m -CONFIG_DRM_CLIENT_SELECTION=m +CONFIG_DRM_CLIENT_LIB=y +CONFIG_DRM_CLIENT_SELECTION=y CONFIG_DRM_CLIENT_SETUP=y # @@ -7210,7 +7209,7 @@ CONFIG_DRM_LOAD_EDID_FIRMWARE=y CONFIG_DRM_DISPLAY_DP_AUX_BUS=m -CONFIG_DRM_DISPLAY_HELPER=m +CONFIG_DRM_DISPLAY_HELPER=y CONFIG_DRM_BRIDGE_CONNECTOR=y # CONFIG_DRM_DISPLAY_DP_AUX_CEC is not set CONFIG_DRM_DISPLAY_DP_AUX_CHARDEV=y @@ -7226,7 +7225,7 @@ CONFIG_DRM_BUDDY=m CONFIG_DRM_VRAM_HELPER=m CONFIG_DRM_TTM_HELPER=m -CONFIG_DRM_GEM_DMA_HELPER=m +CONFIG_DRM_GEM_DMA_HELPER=y CONFIG_DRM_GEM_SHMEM_HELPER=m CONFIG_DRM_SUBALLOC_HELPER=m CONFIG_DRM_SCHED=m @@ -7317,7 +7316,7 @@ CONFIG_DRM_VGEM=m # CONFIG_DRM_VKMS is not set # CONFIG_DRM_EXYNOS is not set -CONFIG_DRM_ROCKCHIP=m +CONFIG_DRM_ROCKCHIP=y CONFIG_ROCKCHIP_VOP=y CONFIG_ROCKCHIP_VOP2=y CONFIG_ROCKCHIP_ANALOGIX_DP=y @@ -7520,7 +7519,7 @@ # CONFIG_DRM_TI_TPD12S015 is not set CONFIG_DRM_ANALOGIX_ANX6345=m # CONFIG_DRM_ANALOGIX_ANX78XX is not set -CONFIG_DRM_ANALOGIX_DP=m +CONFIG_DRM_ANALOGIX_DP=y CONFIG_DRM_ANALOGIX_ANX7625=m CONFIG_DRM_I2C_ADV7511=m CONFIG_DRM_I2C_ADV7511_AUDIO=y @@ -7535,13 +7534,13 @@ # CONFIG_DRM_IMX8QXP_PIXEL_COMBINER is not set # CONFIG_DRM_IMX8QXP_PIXEL_LINK_TO_DPI is not set # CONFIG_DRM_IMX93_MIPI_DSI is not set -CONFIG_DRM_DW_HDMI=m +CONFIG_DRM_DW_HDMI=y # CONFIG_DRM_DW_HDMI_AHB_AUDIO is not set CONFIG_DRM_DW_HDMI_I2S_AUDIO=m # CONFIG_DRM_DW_HDMI_GP_AUDIO is not set CONFIG_DRM_DW_HDMI_CEC=m -CONFIG_DRM_DW_HDMI_QP=m -CONFIG_DRM_DW_MIPI_DSI=m +CONFIG_DRM_DW_HDMI_QP=y +CONFIG_DRM_DW_MIPI_DSI=y # end of Display Interface Bridges CONFIG_DRM_IMX_DCSS=m
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