调试 DisplayPort
查看选定的 DisplayPort
要检查选定的 DisplayPort，请运行以下命令：
示例输出
示例输出
示例输出
Documentation Index
Fetch the complete documentation index at: /llms.txt
Use this file to discover all available pages before exploring further.
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debugfs 文件系统并访问显示子系统调试信息，请运行以下命令：mount -o remount,rw /
mount -t debugfs none /sys/kernel/debug
示例输出cat /sys/kernel/debug/dri/0/DP-1/dp_debug
name = msm_dp
drm_dp_link
rate = 270000
num_lanes = 4
capabilities = 1
dp_panel_info:
active = 3840x2160
back_porch = 80x23
front_porch = 48x3
sync_width = 32x5
active_low = 0x0
h_skew = 0
refresh rate = 30
pixel clock khz = 262750
bpp = 30
dp_link:
test_requested = 512
num_lanes = 4
bw_code = 10
lclk = 270000000
v_level = 1
p_level = 0
示例输出cat /sys/class/drm/card0-DP-1/status
Connected
示例输出cat /sys/class/drm/card0-DP-1/modes
3840x2160
2048x1080