Bug 13986

Summary:	After configuring in XFdrake discrete videocard is unavailable
Product:	Mageia	Reporter:	Nikita Krupenko <krnekit>
Component:	RPM Packages	Assignee:	Mageia tools maintainers <mageiatools>
Status:	NEW ---	QA Contact:
Severity:	major
Priority:	High	CC:	marja11, rverschelde, thierry.vignaud, tmb
Version:	Cauldron	Keywords:	FOR_ERRATA5, IN_ERRATA6
Target Milestone:	Mageia 7
Hardware:	x86_64
OS:	Linux
See Also:	https://bugs.mageia.org/show_bug.cgi?id=16245
Whiteboard:	MGA5TOO
Source RPM:	drakx-kbd-mouse-x11	CVE:
Status comment:
Attachments:	Output of lspci Output of lspcidrake Providers with xorg.conf Providers without xorg.conf xorg.conf

Description Nikita Krupenko 2014-08-25 22:53:57 CEST

Description of problem:
I have laptop with AMD A8-5557M APU (Radeon HD 8550G) and discrete videocard Radeon HD 8750M. I configured video using XFdrake and selected option "Configure all heads independently" in Multi-head configuration. With generated xorg.conf I see only one device in the output of `xrandr --listproviders`. If I delete xorg.conf, I see both devices.

Version-Release number of selected component (if applicable):
rakconf-12.52-1.mga5.src.rpm 

Steps to Reproduce:
1. Configure AMD hybrid graphics using XFdrake
2. Start X and look at output of `xrandr --listproviders`
3. Remove /etc/X11/xorg.conf and restart X
4. Look at the output of `xrandr --listproviders` again

Reproducible: 

Steps to Reproduce:

Comment 1 Nikita Krupenko 2014-08-25 22:55:01 CEST

Created attachment 5365 [details]
Output of lspci

Comment 2 Nikita Krupenko 2014-08-25 22:55:42 CEST

Created attachment 5366 [details]
Output of lspcidrake

Comment 3 Nikita Krupenko 2014-08-25 22:56:19 CEST

Created attachment 5367 [details]
Providers with xorg.conf

Comment 4 Nikita Krupenko 2014-08-25 22:56:44 CEST

Created attachment 5368 [details]
Providers without xorg.conf

Comment 5 Nikita Krupenko 2014-08-25 22:57:11 CEST

Created attachment 5369 [details]
xorg.conf

Comment 6 Rémi Verschelde 2014-09-17 14:20:36 CEST

CC'ing Thierry since he knows XFdrake better than most of us.

I think this is a very general issue with the way discrete GPUs are handled. The problem is the same with Optimus laptops with an intel chipset and a nvidia discrete GPU: the two GPUs are seen as two monitors, even though only the intel chipset is connected to the laptop monitor. The current solution is to configure only the intel GPU, and then to use a hack such as bumblebee to handle the nvidia GPU.

CC: (none) => remi, thierry.vignaud

Samuel Verschelde 2015-05-19 20:51:17 CEST

Whiteboard: (none) => MGA5TOO

Comment 7 Thierry Vignaud 2015-06-10 09:22:20 CEST

Wrong package

Source RPM: drakconf-12.52-1.mga5.src.rpm => drakx-kbd-mouse-x11

Rémi Verschelde 2015-06-10 11:13:14 CEST

Priority: Normal => High
Blocks: (none) => 15527
Target Milestone: --- => Mageia 6
Severity: normal => major

Comment 8 Marja Van Waes 2016-07-12 17:16:10 CEST

Moving to the Mga7 tracker, but also CC'ing tmb, because of some very faint memory that he or someone else was maybe working on a solution for Optimus and other such cases.

CC: (none) => marja11, tmb
Blocks: 15527 => 18932
Target Milestone: Mageia 6 => Mageia 7

Comment 9 Rémi Verschelde 2016-07-13 11:23:57 CEST

BTW I can confirm the bug

To get an optimus laptop working when installing Mageia, one must ensure to configure only the Intel IGP and not the nvidia GPU. It then generates an /etc/X11/xorg.conf for Intel that works, but that hides the discrete GPU.

This however prevents using DRI_PRIME with nouveau (see https://nouveau.freedesktop.org/wiki/Optimus/), so users need to delete /etc/X11/xorg.conf and let the system handle itself so that the nouveau driver can be used.

Whiteboard: MGA5TOO => MGA5TOO FOR_ERRATA

Samuel Verschelde 2016-10-18 13:04:03 CEST

Keywords: (none) => FOR_ERRATA5, FOR_ERRATA6
Whiteboard: MGA5TOO FOR_ERRATA => MGA5TOO

Samuel Verschelde 2016-11-01 12:23:22 CET

Assignee: bugsquad => mageiatools

Samuel Verschelde 2016-11-10 10:36:01 CET

Blocks: 18932 => (none)

Marja Van Waes 2017-03-06 16:28:22 CET

Keywords: FOR_ERRATA6 => IN_ERRATA6

Marja Van Waes 2017-09-10 16:47:38 CEST

See Also: (none) => https://bugs.mageia.org/show_bug.cgi?id=16245