Some code accessed the property 'discreteGpuAvailable' on the module 'appDisplay'

[Jan]

 gnome-shell[1938]: Some code accessed the property 'discreteGpuAvailable' on the module 'appDisplay'. That property was defined with 'let' or 'const' inside the module. This was previously supported, but is not correct according to the ES6 standard. Any symbols to be exported from a module must be defined with 'var'. The property access will work as previously for the time being, but please fix your code anyway.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.1-0ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Fri May 4 12:52:16 2018
DisplayManager: gdm3
GsettingsChanges:

InstallationDate: Installed on 2018-05-04 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_ZA.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Jan (j-engelbrecht5134)]

I get this randomly in the log file

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Shihab Shahriar (shiahab-shahriar)]

I have this on ubuntu 20.04, fresh install. Some further details here:

https://askubuntu.com/questions/1252536/flickering-and-sudden-resolution-changes-on-20-04-and-old-radeon-hd-6570-card

[William R. Edgington (wedgingt)]

I am seeing this after CDROM read errors of audio CDs using rhythmbox on Ubuntu 20.04 with an Nvidia video card.
After that, rhythmbox fails to start, adding this complaint to /var/log/syslog, and cannot be restarted without logging off or rebooting.

Nearby syslog entries appended.

Mar 13 08:56:29 wedgingt kernel: [121925.744832] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
Mar 13 08:56:29 wedgingt kernel: [121925.744838] ata2.00: cmd a0/01:00:00:10:f8/00:00:00:00:00/a0 tag 15 dma 63504 in
Mar 13 08:56:29 wedgingt kernel: [121925.744838] Volume set (in), Read cd be 00 00 05 56 a2 00 00 1b f8 00 00res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
Mar 13 08:56:29 wedgingt kernel: [121925.744839] ata2.00: status: { DRDY }
Mar 13 08:56:29 wedgingt kernel: [121925.744841] ata2: hard resetting link
Mar 13 08:56:30 wedgingt kernel: [121926.059355] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
Mar 13 08:56:30 wedgingt kernel: [121926.064621] ata2.00: configured for UDMA/100
Mar 13 08:56:30 wedgingt rhythmbox.desktop[16448]: scsi_read error: sector=349858 length=27 retry=0
Mar 13 08:56:30 wedgingt kernel: [121926.065866] ata2: EH complete
Mar 13 08:56:30 wedgingt rhythmbox.desktop[16448]: Sense key: 5 ASC: 21 ASCQ: 4
Mar 13 08:56:30 wedgingt rhythmbox.desktop[16448]: Transport error: Illegal SCSI request (rejected by target)
Mar 13 08:56:30 wedgingt rhythmbox.desktop[16448]: System error: Invalid argument
Mar 13 08:57:20 wedgingt kernel: [121976.939509] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
Mar 13 08:57:20 wedgingt kernel: [121976.939515] ata2.00: cmd a0/01:00:00:70:77/00:00:00:00:00/a0 tag 19 dma 30576 in
Mar 13 08:57:20 wedgingt kernel: [121976.939515] Volume set (in), Read cd be 00 00 05 56 a2 00 00 0d f8 00 00res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
Mar 13 08:57:20 wedgingt kernel: [121976.939516] ata2.00: status: { DRDY }
Mar 13 08:57:20 wedgingt kernel: [121976.939518] ata2: hard resetting link
Mar 13 08:57:21 wedgingt kernel: [121977.253940] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
Mar 13 08:57:21 wedgingt kernel: [121977.259226] ata2.00: configured for UDMA/100
Mar 13 08:57:21 wedgingt rhythmbox.desktop[16448]: scsi_read error: sector=349858 length=13 retry=1
Mar 13 08:57:21 wedgingt rhythmbox.desktop[16448]: Sense key: 5 ASC: 21 ASCQ: 4
Mar 13 08:57:21 wedgingt rhythmbox.desktop[16448]: Transport error: Illegal SCSI request (rejected by target)
Mar 13 08:57:21 wedgingt rhythmbox.desktop[16448]: System error: Invalid argument
Mar 13 08:57:21 wedgingt kernel: [121977.260496] ata2: EH complete
Mar 13 08:57:29 wedgingt gnome-shell[3230]: Some code accessed the property 'discreteGpuAvailable' on the module 'appDisplay'. That property was defined with 'let' or 'const' inside the module. This was previously supported, but is not correct according to the ES6 standard. Any symbols to be exported from a module must be defined with 'var'. The property access will work as previously for the time being, but please fix your code anyway.
Ma...