Debian
無法設置正確的顯示解析度
我有目前的 Debian 測試，無法為顯示 dell U2718Q 設置解析度：
# inxi -Gxx Graphics: Card: Intel 2nd Generation Core Processor Family Integrated Graphics Controller bus-ID: 00:02.0 chip-ID: 8086:0116 Display Server: x11 (X.Org 1.19.5 ) drivers: intel Resolution: 1920x1080@60.00hz OpenGl: renderer: Mesa DRI Intel Sandybridge Mobile version: 3.3 Mesa 17.2.5 (compat-v: 3.0) Direct Render: yes/etc/X11/xorg.conf:
Section "Device" Indentifier "Intel Graphics" Driver "intel" Option "AccelMethod" "sna" Option "TearFree" "true" EndSection但這對解決問題沒有幫助。
我嘗試設置：
# xrandr --output HDMI-1 --mode 3840x2160_60.00 xrandr: Configure crtc 0 failed我也嘗試了選項–crtc，但沒有結果。
xrandr 輸出：
# xrandr Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 LVDS-1 connected (normal left inverted right x axis y axis) 1366x768 60.10 + 1360x768 59.80 59.96 1024x768 60.04 60.00 960x720 60.00 928x696 60.05 896x672 60.01 960x600 60.00 960x540 59.99 800x600 60.00 60.32 56.25 840x525 60.01 59.88 800x512 60.17 700x525 59.98 640x512 60.02 720x450 59.89 640x480 60.00 59.94 680x384 59.80 59.96 576x432 60.06 512x384 60.00 400x300 60.32 56.34 320x240 60.05 VGA-1 disconnected (normal left inverted right x axis y axis) HDMI-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 609mm x 349mm 2048x1280 59.99 2048x1080 24.00 1920x1080 60.00* 60.00 50.00 59.94 30.00 25.00 24.00 29.97 23.98 1920x1080i 60.00 50.00 59.94 50.00 1600x1200 60.00 1600x900 60.00 1280x1024 75.02 60.02 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 75.03 60.00 800x600 75.00 60.32 720x576 50.00 720x576i 50.00 720x480 60.00 59.94 720x480i 60.00 59.94 640x480 75.00 60.00 59.94 720x400 70.08 3840x2160_60.00 59.98 DP-1 disconnected (normal left inverted right x axis y axis)我安裝了 xserver-xorg-video-intel、xserver-xorg-video-all、xserver-xorg-core 軟體包。
請任何幫助。
更新：
處理器：Intel Core i5-2467M CPU @ 1.60GHz x 2
埠：HDMI 2.0
/var/log/Xorg.0.log
[ 18.449] (II) LoadModule: "intel" [ 18.456] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so [ 18.469] (II) Module intel: vendor="X.Org Foundation" [ 18.469] compiled for 1.19.0, module version = 2.99.917 [ 18.469] Module class: X.Org Video Driver [ 18.469] ABI class: X.Org Video Driver, version 23.0 [ 18.469] (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 [ 18.470] (II) intel: Driver for Intel(R) HD Graphics [ 18.470] (II) intel: Driver for Intel(R) Iris(TM) Graphics [ 18.470] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics [ 18.490] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20170403 [ 18.490] (II) intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.917+git20161206-1 (Timo Aaltonen <tjaalton@debian.org>) [ 18.490] (II) intel(0): SNA compiled for use with valgrind [ 18.494] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 3000
Sandy Bridge 的輸出沒有足夠的頻寬來支持您的顯示器在 60Hz 的全解析度，但是應該可以創建一種模式來幫助您到達那裡。
本文詳細介紹了計算過程。在您的情況下，重要的因素是您的顯示器的原始解析度為 3840×2160，並且 HDMI 1.4 的最大像素時鐘為 340MHz。使用
umc，我們可以使用它來確定合適的模式線：$ umc 3840 2160 340000000 # 3840x2160x30.00 @ 65.994kHz Modeline "3840x2160x30.00" 340.000000 3840 4080 4496 5152 2160 2164 2168 2200 -HSync +VSync要試試這個，執行
xrandr --newmode "3840x2160x30.00" 340.000000 3840 4080 4496 5152 2160 2164 2168 2200 -HSync +VSync xrandr --addmode HDMI-1 "3840x2160x30.00" xrandr --output HDMI-1 --mode "3840x2160x30.00"如果它對集成 GPU 來說太高了，或者顯示器不喜歡它，你可以嘗試減少像素時鐘，或者減少消隱時間（在現代螢幕上應該沒問題）：
$ umc 3840 2160 30 --rbt # 3840x2160x29.98 @ 65.688kHz Modeline "3840x2160x29.98" 262.750000 3840 3888 3920 4000 2160 2163 2167 2191 +HSync -VSync一旦你有了工作模式行，你可以通過添加一個配置文件來永久儲存它，比如
/etc/X11/xorg.conf.d/30-hdmi-4k.conf，包含：Section "Monitor" Identifier "HDMI-1" ModelName "Your monitor" Modeline "3840x2160x29.98" 262.750000 3840 3888 3920 4000 2160 2163 2167 2191 +HSync -VSync EndSection