linux-kernel - nouveau: DRM: GPU lockup - switching to software fbcon

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Message-ID: <20190614024957.GA9645@jagdpanzerIV>
Date:   Fri, 14 Jun 2019 11:49:57 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Ben Skeggs <bskeggs@...hat.com>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: nouveau: DRM: GPU lockup - switching to software fbcon

5.2.0-rc4-next-20190613

dmesg

 nouveau 0000:01:00.0: DRM: GPU lockup - switching to software fbcon
 nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
 nouveau 0000:01:00.0: fifo: runlist 0: scheduled for recovery
 nouveau 0000:01:00.0: fifo: channel 5: killed
 nouveau 0000:01:00.0: fifo: engine 6: scheduled for recovery
 nouveau 0000:01:00.0: fifo: engine 0: scheduled for recovery
 nouveau 0000:01:00.0: firefox[476]: channel 5 killed!
 nouveau 0000:01:00.0: firefox[476]: failed to idle channel 5 [firefox[476]]

It lockups several times a day. Twice in just one hour today.
Can we fix this?

	-ss