Bug 574766

Summary:	black screen xorg-server 1.18 and Nvidia Optimus
Product:	Gentoo Linux	Reporter:	vylaern <vylaern>
Component:	Current packages	Assignee:	Gentoo X packagers <x11>
Status:	RESOLVED DUPLICATE
Severity:	major	CC:	pchrist
Priority:	Normal
Version:	unspecified
Hardware:	x86
OS:	Linux
URL:	https://bugs.freedesktop.org/show_bug.cgi?id=92313
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	1.18.1 Reverse Prime patch.

Description vylaern 2016-02-15 07:35:04 UTC

Blank screen with xorg-server 1.18.1 and nvidia optimus after startx (eselect opengl nvidia).

Looks like on arch linux there is a patch called 1.18.1-3:
https://bugs.archlinux.org/task/47151

Tested with such drivers:
x11-drivers/xf86-video-intel
2.99.917_p20160213
2.99.917_p20160203
2.99.917_p20160122
x11-drivers/nvidia-drivers
361.28-r2
361.28

Reproducible: Always

Steps to Reproduce:
1.startx from console
2.
3.
Actual Results:  
Black screen.

Expected Results:  
Should be working X system.

I tested both KDE and pure X, form ordinary user and root account - the same. The only solution is to switch into - eselect opengl xorg-x11.

Comment 1 Panagiotis Christopoulos (RETIRED) gentoo-dev

2016-02-29 11:48:45 UTC

Please paste "emerge --info" output, whether this is happening to external monitor or both monitors and lspci output if it's easy. Also give it a try with x11-drivers/xf86-video-intel-2.99.917_p20160224 and can you confirm xorg-server-1.17.4 works flawlessly and with what opengl drivers?

Comment 2 Sven B. 2016-02-29 14:03:16 UTC

Created attachment 427004 [details, diff]
1.18.1 Reverse Prime patch.

Well for the time being your could add the patch[1] manually to /etc/portage/patches/x11-base/xorg-server-1.18.1 to get it working again.

(in case of xfce, i also had to remove ~/.config/xfce4/xfconf/xfce-perchannel-xml/displays.xml , otherwise login failed after the upgrade)

also:
https://bugs.gentoo.org/show_bug.cgi?id=574410

[1] https://cgit.freedesktop.org/xorg/xserver/diff/?id=7bb64d8c1de9659f11da7917772919b071e9db82

Comment 3 Panagiotis Christopoulos (RETIRED) gentoo-dev

2016-02-29 14:58:56 UTC

Ok, then I'm resolving this as duplicate of bug 574410 , to continue the conversation there. If you feel we shouldn't please reopen.

*** This bug has been marked as a duplicate of bug 574410 ***