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#1 2021-05-01 11:40:44

squalou
Member
Registered: 2018-06-04
Posts: 106

[SOLVED] remove xf86-intel-driver and use modesetting instead

Hi,

Mainly out of curiosity I would like to ditch xf86-intel-driver and try 'modesetting' instead.

From this old post https://bbs.archlinux.org/viewtopic.php?id=229242 (and elsewhere), it is said that "just removing the package" should make the system fall back to modesetting.

... and of course it doesn't work, or else I wouldn't be here :-)

I can't really remember if I did anything fancy, I've checked some obvious things but must have missed one.


My system is a 2017 XP13, using i915 at the moment.

I'm running xfce with lightdm, and when removing the package, after reboot, lightdm fails to start.

Here's the output of lspci -v when using intel driver :

00:02.0 VGA compatible controller: Intel Corporation Iris Plus Graphics 640 (rev 06) (prog-if 00 [VGA controller])
	DeviceName:  Onboard IGD
	Subsystem: Dell Device 075b
	Flags: bus master, fast devsel, latency 0, IRQ 139
	Kernel driver in use: i915
	Kernel modules: i915

Funny thing : when removing the package, after reboot, I still see a 'i915' module loaded, when doing "lsmod", I don't know if it's normal.

I do have  i915.conf in /etc/modprobe.d

... and ... I don't know where else to look or what to look for.

Any clue will be greatly appreciated!

thank you

Last edited by squalou (2021-05-01 12:04:32)

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#2 2021-05-01 11:48:08

Scimmia
Fellow
Registered: 2012-09-01
Posts: 8,633

Re: [SOLVED] remove xf86-intel-driver and use modesetting instead

You're looking at kernel driver, xf86-video-intel and modesetting are xorg drivers (notice that's xf86-video-intel, not xf86-intel-driver).

Make sure you don't have anything in /etc/X11/xorg.conf or /etc/X11/xorg.conf.d/ that forces the old driver. If you don't. post your xorg log.

Last edited by Scimmia (2021-05-01 11:48:58)

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#3 2021-05-01 11:48:18

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 13,751

Re: [SOLVED] remove xf86-intel-driver and use modesetting instead

The xorg module and the kernel module are not the same thing, the kernel module is always i915 but we replace the xorg module. Post your xorg log. One obvious one that can happen is that you created a xorg config referencing the Intel driver to enable tearfree or so and that will break xorg. If you remove that xorg will use the modesetting driver.

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#4 2021-05-01 11:49:17

graysky
Wiki Maintainer
From: :wq
Registered: 2008-12-01
Posts: 10,287
Website

Re: [SOLVED] remove xf86-intel-driver and use modesetting instead

You provided no logs or even a description beyond, "it doesn't work."  Since I have no magical access to your hardware you will have to provide more useful data.

For your reference, the i915 kernel module has nothing to do with the Xorg driver you removed and you shouldn't need anything special in /etc/modprobe.d/ for this.


CPU-optimized Linux-ck packages @ Repo-ck  • AUR packagesZsh and other configs

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#5 2021-05-01 11:59:07

squalou
Member
Registered: 2018-06-04
Posts: 106

Re: [SOLVED] remove xf86-intel-driver and use modesetting instead

Thanks all for your early replies (and for clarifications so far).

And yeah I know I didn't provide logs or what : not knowing which ones were ineresting I did not want to add the whole journalctl output.

Really sorry about that, giving a try and adding xorg logs after reboot

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#6 2021-05-01 12:03:43

squalou
Member
Registered: 2018-06-04
Posts: 106

Re: [SOLVED] remove xf86-intel-driver and use modesetting instead

Well spotted : I did hav a reference to intel driver in a file in etc/X11/xorg.conf.d/.

Removed it, it works : thank you !

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