linux-kernel - Re: apple_gmux: switcheroo not working on a 2013 MBP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALkWK0=qTftgogUCyehi-zQWudYC0VTOUjEnSUQYWYv32+JENg@mail.gmail.com>
Date:	Tue, 7 Jan 2014 02:39:22 +0530
From:	Ramkumar Ramachandra <artagnon@...il.com>
To:	Andreas Heider <andreas@...der.io>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Seth Forshee <seth.forshee@...onical.com>
Subject: Re: apple_gmux: switcheroo not working on a 2013 MBP

Hi Andreas,

Andreas Heider wrote:
> that means that something is still using the GPU, try DIGD or alternatively
> shutting down your X-server before switching.

When I try DIGD, I get:

  vga_switcheroo: setting delayed switch to client 0

Then, when I shut down X, I get a blank screen.

When I try IGN after shutting down X, I get the same message:

  vga_switcheroo: client 1 refused switch

> I think there are still some EDID issues because
> https://lkml.org/lkml/2012/8/3/300 never got merged, so even after shutting
> down X you might get a black screen, but it should hopefully work with
> external displays.

The series is really old! Why is gmux in such a shabby state today,
and more importantly: how do I get started hacking on it?

Thanks.

Ram
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/