On Saturday, 10 August 2019 17:18:27 BST Peter Humphrey wrote: > Hello list, > > I have a small box with a quad 64-bit Celeron and integrated graphics During > boot, the UEFI screen is fine, but as soon as the kernel starts, it > switches the background to a dark grey; I can't tell whether the white is > properly white because of the grey background. I don't see anything wrong > with the VT colours, and X11 seems unaffected too with XFCE. I assume the > problem lies in the kernel. > > Can anyone suggest what is wrong with my setup? Google doesn't help me. > > $ sudo lspci -v -s 00:02.0 > 00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium > Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 21) > (prog- if 00 [VGA controller]) > Subsystem: Gigabyte Technology Co., Ltd Atom/Celeron/Pentium > Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller > Flags: bus master, fast devsel, latency 0, IRQ 120 > Memory at 80000000 (64-bit, non-prefetchable) [size=16M] > Memory at 90000000 (64-bit, prefetchable) [size=256M] > I/O ports at f000 [size=64] > [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] > Capabilities: [d0] Power Management version 2 > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- > Capabilities: [b0] Vendor Specific Information: Len=07 <?> > Kernel driver in use: i915 > > $ ls /lib/firmware/i915 > bxt_dmc_ver1_07.bin kbl_dmc_ver1_01.bin skl_dmc_ver1.bin > bxt_dmc_ver1.bin kbl_dmc_ver1_04.bin skl_guc_ver1.bin > bxt_guc_ver8_7.bin kbl_dmc_ver1.bin skl_guc_ver4.bin > bxt_guc_ver9_29.bin kbl_guc_ver9_14.bin skl_guc_ver6_1.bin > bxt_huc_ver01_07_1398.bin kbl_guc_ver9_39.bin skl_guc_ver6.bin > cnl_dmc_ver1_06.bin kbl_huc_ver02_00_1810.bin skl_guc_ver9_33.bin > cnl_dmc_ver1_07.bin skl_dmc_ver1_23.bin > skl_huc_ver01_07_1398.bin > glk_dmc_ver1_04.bin skl_dmc_ver1_26.bin > icl_dmc_ver1_07.bin skl_dmc_ver1_27.bin > > [ebuild R ] sys-kernel/gentoo-sources-4.19.57:4.19.57::gentoo > USE="symlink -build -experimental" > > I have what I think are the right kernel settings for th I915 driver. For > instance, from kernel help: > CONFIG_AGP_INTEL: > This option gives you AGP support for the GLX component of X > on Intel [...] and I915 integrated graphics chipsets.
I assume you have no errors reported in dmesg/syslog? Have you included the firmware blobs in the kernel, or are you loading i915 as a module? Also, I don't know if it applies to this processor, but have you enabled i915.fastboot=1 in the kernel in case it fixes this problem? PS. I'm seeing similar artifacts recently trying to boot various *buntu flavours in QEMU on different radeon host APU/GPUs. I don't know why hardware acceleration stopped working ... I was also considering some kernel setting as being responsible, but haven't been able to find a solution yet. -- Regards, Mick
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