[SKL] My ubuntu doesn't show resolution above 1024x768

Bug #1799035 reported by Bhushan
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Expired
Undecided
Unassigned
xorg-server (Ubuntu)
Invalid
Undecided
Unassigned

Bug Description

my ubuntu doesn't show resolution above 1024X800

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
Uname: Linux 4.15.0-36-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
BootLog:

CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 21 14:35:55 2018
DistUpgraded: 2018-05-13 17:09:57,832 DEBUG icon theme changed, re-reading
DistroCodename: bionic
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation HD Graphics 510 [8086:1902] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd HD Graphics 510 [1458:d000]
InstallationDate: Installed on 2017-05-01 (537 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 0bda:8179 Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter
 Bus 001 Device 003: ID 413c:2107 Dell Computer Corp.
 Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=b3c39627-09f9-42d5-ad90-40cd98527af9 ro quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: Upgraded to bionic on 2018-05-13 (160 days ago)
dmi.bios.date: 03/15/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F2
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H110M-S2-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF2:bd03/15/2016:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH110M-S2-CF:rvrx.x:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
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

Revision history for this message
Bhushan (bpatgaonkar) wrote :
affects: xorg (Ubuntu) → ubuntu
summary: - my ubuntu doesnt show resolution above 1024X800
+ my ubuntu doesnt show resolution above 1024x768
affects: ubuntu → xorg-server (Ubuntu)
summary: - my ubuntu doesnt show resolution above 1024x768
+ [SKL] My ubuntu doesn't show resolution above 1024x768
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

It appears that Xorg can't get any resolution information from your monitor, which is why it is using the default resolution of 1024x768.

Please run this command on the machine and send us the output:

  cat /sys/class/drm/*/edid

If things are working then you will see junk on the screen :)

Changed in linux (Ubuntu):
status: New → Incomplete
Changed in xorg-server (Ubuntu):
status: New → Incomplete
Revision history for this message
Bhushan (bpatgaonkar) wrote :

out of cat /sys/class/drm/*/edid is blank

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

That is the problem then. If the kernel can't get EDID data from your monitor then it has no idea what the supported resolutions are.

First, please try unplugging and re-plugging your monitor a few times. If that doesn't fix it then please also try a different monitor cable if you can.

Second, if this is a software bug then we now know it is in the kernel. So reassigning there...

Changed in xorg-server (Ubuntu):
status: Incomplete → Invalid
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Also, please try:

  sudo cat /sys/class/drm/*/edid

Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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