From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 51381] [drm:atom_op_jump] *ERROR* atombios stuck in loop for
more than 5secs aborting, when disabled via vgaswitcheroo
Date: Fri, 06 Jun 2014 07:29:40 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=51381
--- Comment #22 from Teofilis Martisius ---
Ok,
I tried playing around with Linux 3.12, that's the last stable version before
that commit.
Booted with parameters:
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.12-1-amd64
root=UUID=... ro quiet radeon.audio=0 modeset=1 radeon.dpm=1 radeon.no_wb=1
radeon.runpm=0
Executed:
echo OFF >/sys/kernel/debug/vgaswitcheroo/switch
dGPU got switched off, everything works fine. Got a message in dmesg:
[ 1454.396648] radeon: switched off
I don't want to spam attachments on this bug report, full dmesg output if
needed at:
http://menulis.org/kernel/dmesg_3.12_off1.log
I tried it with radeon.runpm=1 as well, same results, everything works fine.
Dmesg:
http://menulis.org/kernel/dmesg_3.12_off2.log
Let me know if you want these two dmesg logs attached here in bugzilla.
Let me know if you need me to try something else next.
Sincerely,
Teofilis Martisius
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