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#1 2019-01-16 17:51:15

jimjamz
Member
From: Nagasaki, Japan
Registered: 2016-04-04
Posts: 73

[BUG?] Screen locks when during fading transitions or video playback

I have noticed since retrieving BL repository updates from August/September 2018, this has been a common occurrence.

The screen locks but the rest of the system doesn't appear to.  Whatever is on the screen is frozen and cannot be interacted with, but any streaming audio playing in the background continues to play.  The system doesn't appear to be freeze.  The system cannot be shutdown correctly, either via lid closing, power button quick press, or keyboard shortcuts (terminal -> poweroff, or via special keys and arrow keys to navigate the context menu blindly).  A long-press on the power button is the only way to resolve it.

lspci -k:

00:00.0 Host bridge: NVIDIA Corporation MCP89 HOST Bridge (rev a1)
00:00.1 RAM memory: NVIDIA Corporation MCP89 Memory Controller (rev a1)
00:01.0 RAM memory: NVIDIA Corporation Device 0d6d (rev a1)
00:01.1 RAM memory: NVIDIA Corporation Device 0d6e (rev a1)
00:01.2 RAM memory: NVIDIA Corporation Device 0d6f (rev a1)
00:01.3 RAM memory: NVIDIA Corporation Device 0d70 (rev a1)
00:02.0 RAM memory: NVIDIA Corporation Device 0d71 (rev a1)
00:02.1 RAM memory: NVIDIA Corporation Device 0d72 (rev a1)
00:03.0 ISA bridge: NVIDIA Corporation MCP89 LPC Bridge (rev a2)
	Subsystem: Apple Inc. MCP89 LPC Bridge
00:03.1 RAM memory: NVIDIA Corporation MCP89 Memory Controller (rev a1)
00:03.2 SMBus: NVIDIA Corporation MCP89 SMBus (rev a1)
	Subsystem: NVIDIA Corporation MCP89 SMBus
00:03.3 RAM memory: NVIDIA Corporation MCP89 Memory Controller (rev a1)
00:03.4 Co-processor: NVIDIA Corporation MCP89 Co-Processor (rev a1)
	Subsystem: NVIDIA Corporation MCP89 Co-Processor
00:04.0 USB controller: NVIDIA Corporation MCP89 OHCI USB 1.1 Controller (rev a1)
	Subsystem: NVIDIA Corporation MCP89 OHCI USB 1.1 Controller
	Kernel driver in use: ohci-pci
	Kernel modules: ohci_pci
00:04.1 USB controller: NVIDIA Corporation MCP89 EHCI USB 2.0 Controller (rev a2)
	Subsystem: NVIDIA Corporation MCP89 EHCI USB 2.0 Controller
	Kernel driver in use: ehci-pci
	Kernel modules: ehci_pci
00:06.0 USB controller: NVIDIA Corporation MCP89 OHCI USB 1.1 Controller (rev a1)
	Subsystem: NVIDIA Corporation MCP89 OHCI USB 1.1 Controller
	Kernel driver in use: ohci-pci
	Kernel modules: ohci_pci
00:06.1 USB controller: NVIDIA Corporation MCP89 EHCI USB 2.0 Controller (rev a2)
	Subsystem: NVIDIA Corporation MCP89 EHCI USB 2.0 Controller
	Kernel driver in use: ehci-pci
	Kernel modules: ehci_pci
00:08.0 Audio device: NVIDIA Corporation MCP89 High Definition Audio (rev a2)
	Subsystem: NVIDIA Corporation MCP89 High Definition Audio
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
00:09.0 Ethernet controller: NVIDIA Corporation MCP89 Ethernet (rev a1)
	Subsystem: Apple Inc. MCP89 Ethernet
	Kernel driver in use: forcedeth
	Kernel modules: forcedeth
00:0a.0 SATA controller: NVIDIA Corporation MCP89 SATA Controller (AHCI mode) (rev a2)
	Subsystem: Apple Inc. MCP89 SATA Controller (AHCI mode)
	Kernel driver in use: ahci
	Kernel modules: ahci
00:0b.0 RAM memory: NVIDIA Corporation Device 0d75 (rev a1)
00:15.0 PCI bridge: NVIDIA Corporation Device 0d9b (rev a1)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:17.0 PCI bridge: NVIDIA Corporation MCP89 PCI Express Bridge (rev a1)
	Kernel modules: shpchp
01:00.0 Network controller: Broadcom Limited BCM43224 802.11a/b/g/n (rev 01)
	Subsystem: Apple Inc. AirPort Extreme
	Kernel driver in use: bcma-pci-bridge
	Kernel modules: bcma
02:00.0 VGA compatible controller: NVIDIA Corporation MCP89 [GeForce 320M] (rev a2)
	Subsystem: Apple Inc. MCP89 [GeForce 320M]
	Kernel driver in use: nouveau
	Kernel modules: nouveau

This is extremely difficult to be reproduce and just happens randomly.  However, I have noticed this happens 90% of the time when:

1.  Opening a window that will process audio/video content.  E.g. opening/closing VLC Media Player.
2.  During video playback in VLC Media Player.
3.  Opening/closing general windows when the window fade in/out effect occurs.


I'm not sure exactly what logs to check for further diagnosis.  /var/log/syslog doesn't appear to show anything informative around the problem.  If you know a more accurate log to be checking, please advise.

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#2 2019-01-16 19:39:33

damo
....moderator....
Registered: 2015-08-20
Posts: 4,586

Re: [BUG?] Screen locks when during fading transitions or video playback

You could look at the user's journald log for the previous boot, and the output from dmesg (you could pipe dmesg to a logfile to read later, if you can't access the terminal).

I suspect it is a graphics issue, due to the driver or kernel boot parameters. Nvidia?


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#3 2019-02-12 16:25:43

jimjamz
Member
From: Nagasaki, Japan
Registered: 2016-04-04
Posts: 73

Re: [BUG?] Screen locks when during fading transitions or video playback

I've had the problem occur twice when trying to launch virtualbox from the 'Run Program' dialog.  As soon as execute it, everything locks on the screen.  The only thing responding is the mouse cursor.  For example, I cannot blindly poweroff the machine with a new terminal window and command, suggesting the keyboard is also non-responsive.  Potentially a qt issue with the new version of qt and my NVIDIA driver?

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#4 2019-02-12 17:49:38

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 1,661

Re: [BUG?] Screen locks when during fading transitions or video playback

It doesn't look like you are using nvidia drivers, what does inxi -G says?

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#5 2019-02-13 10:15:52

ohnonot
...again
Registered: 2015-09-29
Posts: 3,419
Website

Re: [BUG?] Screen locks when during fading transitions or video playback

^ it does actually, way at the bottom of post #1.
it's also an apple computer. relevant?

also, wasn't virtualbox removed from debian repos? for a reason?
are you sure it's the same problem as in post #1? can't have anything to do with Qt then, no?

not sure if already asked, but can you
a) reproduce the problem reliably
b) switch to a text console (Ctrl-Alt-F2)?

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#6 2019-02-13 10:20:58

damo
....moderator....
Registered: 2015-08-20
Posts: 4,586

Re: [BUG?] Screen locks when during fading transitions or video playback

The output has

Kernel driver in use: nouveau

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#7 2019-02-13 19:53:13

ohnonot
...again
Registered: 2015-09-29
Posts: 3,419
Website

Re: [BUG?] Screen locks when during fading transitions or video playback

^ sorry, I misinterpreted your statement - I thought you meant "drivers for an NVIDIA GPU".
sad

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#8 2019-02-14 05:30:17

johnraff
nullglob
From: Nagoya, Japan
Registered: 2015-09-09
Posts: 4,929
Website

Re: [BUG?] Screen locks when during fading transitions or video playback

OT/

ohnonot wrote:

also, wasn't virtualbox removed from debian repos? for a reason?

It was, because of reasons, but it's back in Stretch-backports, Buster and Sid.


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#9 2019-02-14 18:39:21

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 1,661

Re: [BUG?] Screen locks when during fading transitions or video playback

ohnonot wrote:

it's also an apple computer. relevant?

Probably not, that's mine:

lspci -k | grep -i 'apple\|nvidia' 
05:00.0 VGA compatible controller: NVIDIA Corporation G96 [GeForce 9500 GT] (rev a1)
	Subsystem: Apple Inc. G96 [GeForce 9500 GT]
	Kernel driver in use: nvidia
	Kernel modules: nvidia

Last edited by brontosaurusrex (2019-02-14 18:40:54)

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