September 13, 2019, 2:27pm
Yesterday I installed Fedora 30 in my PC. All ok.
I’m configuring, installing and etc… But I have found this warning in
[ 2.584463] r8169 0000:01:00.0 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
[ 2.585299] sd 4:0:0:0: [sdc] Attached SCSI disk
[ 2.597110] r8169 0000:01:00.0 enp1s0: renamed from eth0
[ 2.677359] logitech-djreceiver 0003:046D:C52B.0003: hiddev96,hidraw0: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-1/input2
[ 2.728629] Setting dangerous option enable_guc - tainting kernel
[ 2.728631] i915: unknown parameter 'i915' ignored
[ 2.729461] checking generic (c0000000 7e9000) vs hw (c0000000 10000000)
[ 2.729462] fb0: switching to inteldrmfb from EFI VGA
[ 2.729501] i915 0000:00:02.0: vgaarb: deactivate vga console
[ 2.730477] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 2.730477] [drm] Driver supports precise vblank timestamp query.
I don’t know what
i915: unknown parameter 'i915' ignored means. In none of the configuration files present in /etc/modprobe.d/ are there any parameters for the i915 module.
September 13, 2019, 4:48pm
I guess it’s in your cmdline, see:
cmdline is build from /etc/default/grub (the line with
GRUB_CMDLINE_LINUX) during kernel install and grub2-mkconfig .
please show us your output of the above cat command !
i915 is the driver for your intel graphic card btw.
To my GRUB_CMDLINE_LINUX I have manual added i915.enable_guc=3 which loads firmware (GuC and HuC)  and that taints the kernel
Parameter for i915 see
what the FW is good for see:
if you feedle with /etc/default/grub you afterwards need to run
sudo grub2-mkconfig …
see if FW is loaded correct
dmesg | grep drm | grep -E ‘GuC|HuC’
September 13, 2019, 6:24pm
That warning is with Fedora new fresh install and none parameter added to kernel cmdline or `/etc/modprobe.d/.
This is the default cmdline:
BOOT_IMAGE=(hd1,gpt2)/vmlinuz-5.2.13-200.fc30.x86_64 root=/dev/mapper/fedora_localhost--live-root ro resume=/dev/mapper/fedora_localhost--live-swap rd.lvm.lv=fedora_localhost-live/root rd.lvm.lv=fedora_localhost-live/swap rhgb quiet
But I have added several options:
spectre_v2=off nopti i915.modeset=1 pcie_aspm=force scsi_mod.use_blk_mq=1
and I have added another i915 options in modprobe conf file:
$ cat /etc/modprobe.d/i915.conf
options i915 fastboot=1
options i915 enable_guc=2
The i915 options added for me work well. I had the same in Arch Linux (
my previous OS).
I think that warning could be a bug but I can’t find the parameter that triggers that warning.
September 13, 2019, 10:01pm
you could try to boot with the parameter for i915 alone to see if that triggers you error.
another thought is:
are you sure that in your /etc/modprobe.d/i915.conf the two “options i915” are valid ?
And if so: are the line endings correct ?
you maybe try with just one line in it:
options i915 fastboot=1 enable_guc=2
September 14, 2019, 12:47pm
It works both ways.
Thanks for the answers but as I said the error occurs from the installation (the day before) without me having added any parameter to the module i915.
Since it’s a warning, I think it’s best not to give it more importance.