*** This bug is a duplicate of bug 1714178 ***
https://bugs.launchpad.net/bugs/1714178
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1714178, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may
find.
** This bug has been marked a duplicate of bug 1714178
Triple 4K monitor display failed (modesetting driver limited to 8192x8192)
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https://bugs.launchpad.net/bugs/1795439
Title:
Triple 4K displays Intel HD620 max output of 8192x8192
Status in xorg package in Ubuntu:
New
Bug description:
Brand new Shuttle PC direct from factory, Kaby Lake with Intel HD620
(which uses part of the 16GB RAM) with Bionic-Beaver-latest install
last month (september 2018) for Cancer Research. The application is
Libre Office 6.0.6.2 with very many linked graphics per sheet (nearly
all columns used for some analyses).
The Display Port plus HDMI1 plus HDMI2 outputs are all simultaneous 4K
(unlike the Intel HD600) which is ideal for this type of research work
(all three monitors are very large 42"+). One application across all
three monitors to compare any detail. Else than a presentation
luxury, it's where the whole work was headed since four years - like
engineering, the size of the surface of a table.
The Xorg interpretation that shows up in xrandr is default limit at
8192x8192 but the user doesn't know it. Bionic Beaver "settings"
allows attempts to move and modify, illustrates the effort, finds then
loses the third screen, crashes if the user persists and doesn't
mention the limit. It works (and very well) only if two displays are
left-right and one is placed underneath or over the top. It is
possible to find that out by trial (and lots of error).
According to askubuntu, the Intel gen 6 and up (or thereabouts) all support
16384x16384.
One user confirms Ubuntu 18.04 offers that full boundary if the driver is
Nvidia but not if it's Intel i915. The user also stated that this was "a known
problem with ubuntu17 and gnome and fixed" but I can't find any reference about
that, nor how to do it.
A suggested source code "Intel side" patch was commented on this askubuntu
page last week
https://askubuntu.com/questions/1045664/kubuntu-18-7th-gen-intel-graphics-incorrect-max-resolution
Intel sites suggest contacting Ubuntu and the Vendor first. So I post
the bug here.
[By the way, the other PC was on 18.04 Lubuntu with Libreoffice 6.10
and crashed or froze about ten times per day (Open GL or without).
This new PC and the previous are now both with Bionic Beaver and Gnome
and not once has either hesitated, not one single stoppage of any
type. Absolutely amazing. Wonderful. The stability is crucial and I
hope developers and Canonical receive praise - an important decision
in favour of users. My suffering is ended. Thankyou].
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
Uname: Linux 4.15.0-34-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CompositorRunning: None
Date: Mon Oct 1 16:50:28 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DpkgLog:
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA
controller])
Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer HD Graphics 620
[1297:4052]
InstallationDate: Installed on 2018-09-13 (17 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card
Reader Controller
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 046d:c30a Logitech, Inc. iTouch Composite
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Shuttle Inc. DS77U
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic
root=UUID=9cdb8aeb-51e4-4cb5-95e7-b58572bf4dd7 ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/12/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.08
dmi.board.asset.tag: Default string
dmi.board.name: FS77U
dmi.board.vendor: Shuttle Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 9
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1.08:bd03/12/2018:svnShuttleInc.:pnDS77U:pvrV1.0:rvnShuttleInc.:rnFS77U:rvr1.0:cvnDefaultstring:ct9:cvrDefaultstring:
dmi.product.family: D
dmi.product.name: DS77U
dmi.product.version: V1.0
dmi.sys.vendor: Shuttle Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
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