我有一台安装了 Arch Linux 的 Thinkpad X1C（第 3 代）。当我将显示器连接到笔记本电脑 DP 时，它会忽亮忽灭，有时会导致内核崩溃。查看系统日志，我看到以下有关 DP 的错误：
$ sudo journalctl -b 1 | grep drm | cut -d' ' -f 6- | sort | uniq
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* failed to enable link training
[drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* failed to get link status
[drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
[drm:intel_dp_start_link_train [i915]] *ERROR* failed to get link status
[drm:intel_dp_start_link_train [i915]] *ERROR* failed to start channel equalization
系统详情
内核：Linux 4.8.6-2-ck
xf86-video-intel：1:2.99.917+725+gbf7316a-1