Public bug reported:
CID: 201403-14892 Inspiron 3531
Even without external monitor connected, there is an "unknown" display in the
display utility.
And in the screenshot, you can see the extended desktop.
ubuntu@201403-14892:~$ xrandr -q
Screen 0: minimum 320 x 200, current 2390 x 768, maximum 32767 x 32767
eDP1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis)
344mm x 194mm
1366x768 60.0*+ 39.9
1360x768 59.8 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 connected 1024x768+1366+0 (normal left inverted right x axis y axis) 0mm x
0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
ubuntu@201403-14892:~$ lspci -nn| grep '\[03'
00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor
Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0e)
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-39-generic 3.13.0-39.66
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 1520 F.... pulseaudio
CRDA:
country TW:
(2402 - 2472 @ 40), (3, 27)
(5270 - 5330 @ 40), (3, 17), DFS
(5735 - 5815 @ 40), (3, 30)
CurrentDesktop: Unity
Date: Mon Nov 17 23:02:14 2014
HibernationDevice: RESUME=UUID=217ae5ce-6101-4b1d-8ed3-e5df8cacfafa
InstallationDate: Installed on 2014-11-17 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
Lsusb:
Bus 001 Device 005: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card
Reader Controller
Bus 001 Device 004: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 001 Device 003: ID 0c45:64ad Microdia
Bus 001 Device 002: ID 8087:07e6 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Inspiron 3531
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-39-generic
root=UUID=34aa7766-e502-48af-81d4-5a155b69c395 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-39-generic N/A
linux-backports-modules-3.13.0-39-generic N/A
linux-firmware 1.127.8
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/02/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02_UpdateMCU
dmi.board.name: 00FTTX
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A02_UpdateMCU
dmi.modalias:
dmi:bvnDellInc.:bvrA02_UpdateMCU:bd07/02/2014:svnDellInc.:pnInspiron3531:pvrA02_UpdateMCU:rvnDellInc.:rn00FTTX:rvrA00:cvnDellInc.:ct8:cvrA02_UpdateMCU:
dmi.product.name: Inspiron 3531
dmi.product.version: A02_UpdateMCU
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Anthony Wong (anthonywong)
Status: Confirmed
** Tags: 201403-14892 amd64 apport-bug staging taipei-lab trusty
** Attachment added: "Screenshot from 2014-11-17 23:20:09.png"
https://bugs.launchpad.net/bugs/1393651/+attachment/4262801/+files/Screenshot%20from%202014-11-17%2023%3A20%3A09.png
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https://bugs.launchpad.net/bugs/1393651
Title:
[Dell Inspiron 3531] "Unknown" display found in display utility
[8086:0f31]
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