我在 Gigabyte Brix (GB-BACE-3150) 上安装了 Ubuntu (16.04 LTS)。它通过 HDMI 连接到一台 50 英寸的 Panasonic 等离子电视 (TH-50PX600A)。屏幕上的图像比屏幕四边都大，切掉了边缘。屏幕的系统信息显示它是一台 65 英寸的 Panasonic 电视，而不是 50 英寸的。我注意到电视的 EDID 没有指定显示尺寸。因此它似乎默认为 65 英寸。
我认为如果我通过 xorg.conf 文件指定正确的显示尺寸，显示就会缩小以适合屏幕，但事实并非如此，显示图像仍然大于屏幕。
电视没有宽高比调整功能，无法缩小图像以适合屏幕尺寸。
我查看了 xorg 日志文件，似乎它正在正确加载我的 xorg.conf。我的 xorg.conf 和日志文件如下。
如果您能提供任何关于如何使图像适合电视屏幕尺寸的建议，我们将不胜感激。
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
EndSection
Section "Monitor"
Identifier "Panasonic-50"
HorizSync 15.0 - 46.0
VertRefresh 48.0 - 61.0
Modeline "1280x720" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync
Modeline "1366x768" 85.500 1360 1440 1552 1792 768 771 777 795 +hsync +vsync
Modeline "1920x1080" 74.250 1920 2008 2052 2200 1080 1084 1094 1125 +hsync +vsync interlace
DisplaySize 1106 622
Option "UseEDID" "false"
EndSection
Section "Screen"
Identifier "Screen 0"
Monitor "Panasonic-50"
Device "Intel Graphics"
SubSection "Display"
Modes "1280x720" "1366x768" "1920x1080"
EndSubSection
EndSection
X.Org X Server 1.19.3
Release Date: 2017-03-15
[ 6.560] X Protocol Version 11, Revision 0
[ 6.560] Build Operating System: Linux 4.4.0-97-generic x86_64 Ubuntu
[ 6.560] Current Operating System: Linux BRICK 4.13.0-36-generic #40~16.04.1-Ubuntu SMP Fri Feb 16 23:25:58 UTC 2018 x86_64
[ 6.560] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.13.0-36-generic.efi.signed root=UUID=69b8f9c0-513a-443b-bb08-6684e58a0022 ro quiet splash vt.handoff=7
[ 6.560] Build Date: 13 October 2017 02:11:50PM
[ 6.560] xorg-server 2:1.19.3-1ubuntu1~16.04.4 (For technical support please see http://www.ubuntu.com/support)
[ 6.560] Current version of pixman: 0.33.6
[ 6.560] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 6.560] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 6.561] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Mar 3 20:50:09 2018
[ 6.561] (==) Using config file: "/etc/X11/xorg.conf"
[ 6.561] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 6.562] (==) No Layout section. Using the first Screen section.
[ 6.562] (**) |-->Screen "Screen 0" (0)
[ 6.562] (**) | |-->Monitor "Panasonic-50"
[ 6.563] (**) | |-->Device "Intel Graphics"
[ 6.563] (==) Automatically adding devices
[ 6.563] (==) Automatically enabling devices
[ 6.563] (==) Automatically adding GPU devices
[ 6.563] (==) Automatically binding GPU devices
[ 6.563] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 6.563] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 6.563] Entry deleted from font path.
[ 6.563] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[ 6.563] Entry deleted from font path.
[ 6.563] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[ 6.563] Entry deleted from font path.
[ 6.563] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[ 6.563] Entry deleted from font path.
[ 6.563] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[ 6.563] Entry deleted from font path.
[ 6.563] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/Type1,
built-ins
[ 6.563] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[ 6.563] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 6.563] (II) Loader magic: 0x561ac385be00
[ 6.563] (II) Module ABI versions:
[ 6.563] X.Org ANSI C Emulation: 0.4
[ 6.563] X.Org Video Driver: 23.0
[ 6.563] X.Org XInput driver : 24.1
[ 6.563] X.Org Server Extension : 10.0
[ 6.565] (++) using VT number 7
[ 6.566] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 6.567] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 6.584] (--) PCI:*(0:0:2:0) 8086:22b1:1458:1000 rev 33, Mem @ 0x90000000/16777216, 0x80000000/268435456, I/O @ 0x0000f000/64, BIOS @ 0x????????/131072
[ 6.584] (II) LoadModule: "glx"
[ 6.586] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 6.599] (II) Module glx: vendor="X.Org Foundation"
[ 6.600] compiled for 1.19.3, module version = 1.0.0
[ 6.600] ABI class: X.Org Server Extension, version 10.0
[ 6.600] (II) LoadModule: "intel"
[ 6.600] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[ 6.605] (II) Module intel: vendor="X.Org Foundation"
[ 6.605] compiled for 1.19.3, module version = 2.99.917
[ 6.605] Module class: X.Org Video Driver
[ 6.605] ABI class: X.Org Video Driver, version 23.0
[ 6.605] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[ 6.606] (II) intel: Driver for Intel(R) HD Graphics
[ 6.606] (II) intel: Driver for Intel(R) Iris(TM) Graphics
[ 6.606] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics
[ 6.607] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20170619
[ 6.607] (II) intel(0): SNA compiled: xserver-xorg-video-intel-hwe-16.04 2:2.99.917+git20170309-0ubuntu1~16.04.1 (Timo Aaltonen <[email protected]>)
[ 6.607] (II) intel(0): SNA compiled for use with valgrind
[ 6.609] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics
[ 6.610] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2; using a maximum of 4 threads
[ 6.610] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[ 6.610] (==) intel(0): RGB weight 888
[ 6.610] (==) intel(0): Default visual is TrueColor
[ 6.611] (II) intel(0): Output DP1 using monitor section Panasonic-50
[ 6.611] (II) intel(0): Enabled output DP1
[ 6.611] (II) intel(0): Output HDMI1 has no monitor section
[ 6.612] (II) intel(0): Enabled output HDMI1
[ 6.612] (II) intel(0): Output DP2 has no monitor section
[ 6.612] (II) intel(0): Enabled output DP2
[ 6.612] (II) intel(0): Output HDMI2 has no monitor section
[ 6.612] (II) intel(0): Enabled output HDMI2
[ 6.612] (II) intel(0): Output DP3 has no monitor section
[ 6.613] (II) intel(0): Enabled output DP3
[ 6.613] (II) intel(0): Output HDMI3 has no monitor section
[ 6.613] (II) intel(0): Enabled output HDMI3
[ 6.613] (--) intel(0): Using a maximum size of 256x256 for hardware cursors
[ 6.613] (II) intel(0): Output VIRTUAL1 has no monitor section
[ 6.613] (II) intel(0): Enabled output VIRTUAL1
[ 6.613] (--) intel(0): Output HDMI3 using initial mode 1280x720 on pipe 2
[ 6.613] (==) intel(0): TearFree disabled
[ 6.614] (==) intel(0): Using gamma correction (1.0, 1.0, 1.0)
[ 6.614] (**) intel(0): Display dimensions: (1106, 622) mm
[ 6.614] (**) intel(0): DPI set to (29, 29)
答案1
您所体验到的是一种电视“功能”，通常被称为过扫描。您无法通过更改 X 设置来修复此问题，因为它们本身没有任何问题。电视故意丢弃了图像的外边缘，无论输入信号是什么，它都会继续这样做。
好消息是它可以关闭，所以只要在电视菜单中搜索一下，直到找到它。（我碰巧也有一台松下等离子电视，在我的电视上，它位于图片 > 屏幕设置 > 16:9 过扫描下，但 ymmv）