From: Takashi Iwai <tiwai@suse.de>
To: Alex Deucher <alexdeucher@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Subject: Switchable graphics and radeon PX runtime
Date: Fri, 14 Nov 2014 09:12:48 +0100 [thread overview]
Message-ID: <s5hwq6ynqtb.wl-tiwai@suse.de> (raw)
Hi Alex,
we've got a few bug reports about the behavior of radeon driver on
machines with Intel+AMD "switchable graphics" (no Muxless). So far,
it seems that the sane only way to make the machine working is to get
back to the old vgaswitcheroo behavior via radeon.runpm=0. Without
it, radeon GPU gives a spurious output as connected, eventually
crashes GNOME. (Also, from the nature of the switchable graphics,
vgaswitcheroo looks more intuitive to me.)
How are such machines supposed to work with the recent system? Is PX
wrongly detected on them, or something else missing?
If it shouldn't be treated as PX, would we put them in
radeon_px_quirk_list[]? Of course, this won't scale. So, any better
way to detect such machines?
thanks,
Takashi
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
next reply other threads:[~2014-11-14 8:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-14 8:12 Takashi Iwai [this message]
2014-11-14 9:33 ` Switchable graphics and radeon PX runtime Dave Airlie
2014-11-14 10:09 ` Takashi Iwai
2014-11-14 15:40 ` Alex Deucher
2014-11-14 16:14 ` Takashi Iwai
2014-11-14 17:29 ` Alex Deucher
2014-11-14 19:39 ` Takashi Iwai
2014-11-25 20:11 ` Takashi Iwai
2014-11-27 2:11 ` Alex Deucher
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=s5hwq6ynqtb.wl-tiwai@suse.de \
--to=tiwai@suse.de \
--cc=alexdeucher@gmail.com \
--cc=dri-devel@lists.freedesktop.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox