Bug 187581 - Nouveau GPU Lock Up with 2D Acceleration
Summary: Nouveau GPU Lock Up with 2D Acceleration
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - non Intel) (show other bugs)
Hardware: PPC-64 Linux
: P1 high
Assignee: drivers_video-dri
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-11-13 23:13 UTC by Mingcong Bai
Modified: 2016-11-13 23:17 UTC (History)
1 user (show)

See Also:
Kernel Version: 4.8.6
Subsystem:
Regression: No
Bisected commit-id:

Attachments
dmesg without nouveau.noaccel=1 (44.67 KB, application/octet-stream)
2016-11-13 23:14 UTC, Mingcong Bai 		Details
dmesg with nouveau.noaccel=1 (44.54 KB, application/octet-stream)
2016-11-13 23:14 UTC, Mingcong Bai 		Details
Kernel config (4.8.6) (144.42 KB, application/octet-stream)
2016-11-13 23:15 UTC, Mingcong Bai 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Mingcong Bai 2016-11-13 23:13:58 UTC 
Happened to get 2 FX4500's for my PowerMac G5 11,2, but it didn't seem willing to cooperate.

Without nouveau.noaccel=1 in the kernel parameter, the system starts fine, but X would only work with fbdev driver - as GPU locks up at early stages of startup (dmesg attached above).

With nouveau.noaccel=1 in the kernel parameter, system starts fine without the lock up message, but X will **still** only work with fbdev - using nouveau with result in a looped output of the following message:

"nouveau 0000:0a:00.0: DRM: 0x13DC: Parsing digital output script table"

And the system is inaccessible, this also appears to hang any `systemctl stop lightdm` operation and even the `reboot` command itself.

---------------------------

Xorg-Server version: 1.18.4
Kernel version: 4.8.6
xf86-video-nouveau version: 1.0.12

---------------------------

A similar bug report is filed here due to uncertainty on the origin of the issue.
Comment 1 Mingcong Bai 2016-11-13 23:14:23 UTC 
Created attachment 244351 [details]
dmesg without nouveau.noaccel=1
Comment 2 Mingcong Bai 2016-11-13 23:14:39 UTC 
Created attachment 244361 [details]
dmesg with nouveau.noaccel=1
Comment 3 Mingcong Bai 2016-11-13 23:15:44 UTC 
Created attachment 244371 [details]
Kernel config (4.8.6)
Comment 4 Mingcong Bai 2016-11-13 23:16:23 UTC 
Kernel binary can be obtained here: https://repo.aosc.io/os-ppc64/os3-dpkg/l/linux-kernel-4.8.6_4.8.6-0_ppc64.deb
Comment 5 Mingcong Bai 2016-11-13 23:17:27 UTC 
Original Freedesktop.org bug report: https://bugs.freedesktop.org/show_bug.cgi?id=98712
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