From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 66963] Rv6xx dpm problems
Date: Thu, 30 Jan 2014 02:54:17 +0000 [thread overview]
Message-ID: <bug-66963-502-HaATJk0eFs@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-66963-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #194 from Shawn Starr <shawn.starr@rogers.com> ---
I wonder if something isn't being reset in VBIOS when it fails to boot after
POST, I see the BIOS boot up, grub display, but after kernel starts booting
(when radeon is loaded), we just die.
Alex, would it be possible for the radeon driver prior to loading DPM to dump
the register state of GPU and then dump it after DPM to console (so maybe
netconsole or serial cable can capture the output)?
So,
1) prior to rebooting machine, use a tool to dump the current register states
of GPU/hw
2) upon loading radeon.ko but prior to DPM being switched on, dump the
registers of GPU/hw to screen and then switch DPM on, then do the dump again
(assuming this isn't going to lock up system).
maybe we can narrow down something not being cleared upon booting up sometimes?
Thanks,
Shawn
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next prev parent reply other threads:[~2014-01-30 2:54 UTC|newest]
Thread overview: 308+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-16 14:11 [Bug 66963] New: r600: linux 3.11RC1 isn't booting with radeon.dpm=1 option in grub bugzilla-daemon
2013-07-18 7:28 ` [Bug 66963] " bugzilla-daemon
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2013-07-23 15:02 ` [Bug 66963] r600: linux 3.11RC " bugzilla-daemon
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2013-10-07 16:08 ` [Bug 66963] Rv6xx dpm problems bugzilla-daemon
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