Here I've decoded your EDID using 'xxd' and then 'edid-decode':
EDID version: 1.3
Manufacturer: SAM Model 509 Serial Number 1
Made in week 48 of 2008
Digital display
Maximum image size: 16 cm x 9 cm
Gamma: 2.20
RGB color display
First detailed timing is preferred timing
Display x,y Chromaticity:
Red: 0.6396, 0.3300
Green: 0.2998, 0.5996
Blue: 0.1503, 0.0595
White: 0.3125, 0.3291
Established timings supported:
720x400@70Hz 9:5 HorFreq: 31469 Hz Clock: 28.320 MHz
640x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 25.175 MHz
640x480@67Hz 4:3 HorFreq: 35000 Hz Clock: 30.240 MHz
640x480@72Hz 4:3 HorFreq: 37900 Hz Clock: 31.500 MHz
640x480@75Hz 4:3 HorFreq: 37500 Hz Clock: 31.500 MHz
800x600@60Hz 4:3 HorFreq: 37900 Hz Clock: 40.000 MHz
800x600@72Hz 4:3 HorFreq: 48100 Hz Clock: 50.000 MHz
800x600@75Hz 4:3 HorFreq: 46900 Hz Clock: 49.500 MHz
832x624@75Hz 4:3 HorFreq: 49726 Hz Clock: 57.284 MHz
1024x768@60Hz 4:3 HorFreq: 48400 Hz Clock: 65.000 MHz
1024x768@70Hz 4:3 HorFreq: 56500 Hz Clock: 75.000 MHz
1024x768@75Hz 4:3 HorFreq: 60000 Hz Clock: 78.750 MHz
1280x1024@75Hz 5:4 HorFreq: 80000 Hz Clock: 135.000 MHz
1152x870@75Hz 192:145 HorFreq: 67500 Hz Clock: 108.000 MHz
Standard timings supported:
1152x864@75Hz 4:3 HorFreq: 67500 Hz Clock: 108.000 MHz
1280x800@60Hz 16:10
1280x960@60Hz 4:3 HorFreq: 60000 Hz Clock: 108.000 MHz
1280x1024@60Hz 5:4 HorFreq: 64000 Hz Clock: 108.000 MHz
1440x900@60Hz 16:10 HorFreq: 55500 Hz Clock: 88.750 MHz
1440x900@75Hz 16:10 HorFreq: 82300 Hz Clock: 156.000 MHz
1680x1050@60Hz 16:10 HorFreq: 64700 Hz Clock: 119.000 MHz
Detailed mode: Clock 148.500 MHz, 160 mm x 90 mm
1920 2008 2052 2200 hborder 0
1080 1084 1089 1125 vborder 0
+hsync +vsync
VertFreq: 60 Hz, HorFreq: 67500 Hz
Detailed mode: Clock 85.500 MHz, 160 mm x 90 mm
1360 1424 1536 1792 hborder 0
768 771 777 795 vborder 0
+hsync +vsync
VertFreq: 60 Hz, HorFreq: 47712 Hz
Monitor ranges (GTF): 24-75Hz V, 26-81kHz H, max dotclock 230MHz
Monitor name: SAMSUNG
Has 1 extension blocks
Checksum: 0x6f (valid)
CTA extension block
Extension version: 3
35 bytes of CTA data
Video data block
VIC 16 1920x1080@60Hz 16:9 (native) HorFreq: 67500 Hz Clock: 148.500 MHz
VIC 31 1920x1080@50Hz 16:9 HorFreq: 56250 Hz Clock: 148.500 MHz
VIC 4 1280x720@60Hz 16:9 HorFreq: 45000 Hz Clock: 74.250 MHz
VIC 19 1280x720@50Hz 16:9 HorFreq: 37500 Hz Clock: 74.250 MHz
VIC 5 1920x1080i@60Hz 16:9 HorFreq: 33750 Hz Clock: 74.250 MHz
VIC 20 1920x1080i@50Hz 16:9 HorFreq: 28125 Hz Clock: 74.250 MHz
VIC 3 720x480@60Hz 16:9 HorFreq: 31469 Hz Clock: 27.000 MHz
VIC 18 720x576@50Hz 16:9 HorFreq: 31250 Hz Clock: 27.000 MHz
VIC 32 1920x1080@24Hz 16:9 HorFreq: 27000 Hz Clock: 74.250 MHz
VIC 33 1920x1080@25Hz 16:9 HorFreq: 28125 Hz Clock: 74.250 MHz
VIC 34 1920x1080@30Hz 16:9 HorFreq: 33750 Hz Clock: 74.250 MHz
Audio data block
Linear PCM, max channels 2
Supported sample rates (kHz): 48 44.1 32
Supported sample sizes (bits): 24 20 16
Speaker allocation data block
Speaker map:
FL/FR - Front Left/Right
Extended tag: Video capability data block
YCbCr quantization: No Data (0)
RGB quantization: No Data (0)
PT scan behaviour: No Data (0)
IT scan behaviour: Support both over- and underscan (3)
CE scan behaviour: Support both over- and underscan (3)
Extended tag: Colorimetry data block
xvYCC601
xvYCC709
Vendor-specific data block, OUI 000c03 (HDMI)
Source physical address 1.0.0.0
Supports_AI
DC_36bit
DC_30bit
DC_Y444
Maximum TMDS clock: 225MHz
Underscans PC formats by default
Basic audio support
Supports YCbCr 4:4:4
Supports YCbCr 4:2:2
1 native detailed modes
Detailed mode: Clock 74.250 MHz, 160 mm x 90 mm
1280 1390 1430 1650 hborder 0
720 725 730 750 vborder 0
+hsync +vsync
VertFreq: 60 Hz, HorFreq: 45000 Hz
Detailed mode: Clock 74.250 MHz, 160 mm x 90 mm
1280 1720 1760 1980 hborder 0
720 725 730 750 vborder 0
+hsync +vsync
VertFreq: 50 Hz, HorFreq: 37500 Hz
Detailed mode: Clock 74.250 MHz, 160 mm x 90 mm
1920 2008 2052 2200 hborder 0
540 542 547 562 vborder 0
+hsync +vsync interlaced
VertFreq: 60 Hz, HorFreq: 33750 Hz
Detailed mode: Clock 74.250 MHz, 160 mm x 90 mm
1920 2448 2492 2640 hborder 0
540 542 547 562 vborder 0
+hsync +vsync interlaced
VertFreq: 50 Hz, HorFreq: 28125 Hz
Checksum: 0x1d (valid)
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to qtbase-opensource-src in
Ubuntu.
https://bugs.launchpad.net/bugs/1792167
Title:
Display size detected incorrectly
Status in mutter package in Ubuntu:
Invalid
Status in qtbase-opensource-src package in Ubuntu:
Invalid
Bug description:
My external monitor is detected as 7" although it is 32". All
applications which use Qt auto scaling have huge controls!
It seems like many users have the same problem
(https://ubuntuforums.org/showthread.php?t=2390362) and thus disable
Qt auto scaling. I think the solution should be to fix the size
detection instead.
It seems not related to the display server, compositor or window
manager since the problem appeared in Ubuntu 17.04 (Mir, Unity) as
well es 18.04 (Mutter, Gnome). I tried it with both Wayland and X (on
Wayland).
Further, it seems not related to graphics driver, since I personally
use the open source driver with my internal Intel card, whereas
someone else uses a proprietary Nvidia driver
(https://askubuntu.com/q/1066879/206608).
If it is in the wrong category, please move it / add the corresponding
packages.
If you need any further information to tackle the problem, just tell me!
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.3
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2017-09-05 (372 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
Package: qtbase-opensource-src
PackageArchitecture: amd64
Tags: bionic
Uname: Linux 4.18.7-041807-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom davfs2 dip docker lpadmin plugdev sambashare sudo
vboxusers video voice
_MarkForUpload: True
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1792167/+subscriptions
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