linux-kernel - Re: [PATCH] apple-gmux: Restore switch registers on suspend/resume

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

Message-ID: <1343524730.1962.5.camel@shinybook.infradead.org>
Date:	Sun, 29 Jul 2012 02:18:50 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Andreas Heider <andreas@...tr.de>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>,
	Arun Raghavan <arun.raghavan@...labora.co.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] apple-gmux: Restore switch registers on suspend/resume

On Sun, 2012-07-29 at 01:42 +0100, David Woodhouse wrote:
> If I don't hack it to switch the mux to IGD at boot time, I never manage
> to get a sane picture out of the Intel device after switching to it.
> It's late now, but I'll try to get a proper debug log of the working and
> failing cases tomorrow. 

From the hacked kernel (after fixing vga_switcheroo_enable() not to do:
		event.info = client->fb_info;
 		fb_notifier_call_chain(FB_EVENT_REMAP_ALL_CONSOLE, &event);
if client->fb_info is NULL)...

http://david.woodhou.se/dmesg-boot-to-IGD (blank screen)
http://david.woodhou.se/dmesg-boot-to-IGD-and-switch-to-DIS (works)
http://david.woodhou.se/dmesg-boot-to-IGD-and-switch-to-DIS-and-back-to-IGD (works)

Without switching to IGD at startup...

http://david.woodhou.se/dmesg-boot-to-DIS (works)
http://david.woodhou.se/dmesg-boot-to-DIS-then-switch-to-IGD (blank)

-- 
dwmw2

Download attachment "smime.p7s" of type "application/x-pkcs7-signature" (6171 bytes)