我的系统从睡眠状态唤醒后无法显示任何内容。重新启动后会显示正常的 GRUB 引导加载程序，但显示屏上没有显示任何信号。
我的系统：
- Intel i5 4590 使用集成显卡。
- 技嘉 H81TN
- 内核 4.4.0-96-通用#119-Ubuntu
使用 failsafe x 启动提供了显示端口，但任何常规启动时问题仍然存在。
正常启动时，我可以从 HDMI 获取输出，但无法从显示端口获取输出。
我已尝试过dpkg-reconfigure xserver-xorg但apt install --reinstall xserver-xorg-video-intel无济于事。
/var/log/kern.log | grep ERROR节目
Sep 25 23:06:30 prp-tn-nix-mk-iv kernel: [13927.364875] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe A
Sep 25 23:06:30 prp-tn-nix-mk-iv kernel: [13927.364891] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
Sep 30 21:59:19 prp-tn-nix-mk-iv kernel: [212918.484179] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 22:06:17 prp-tn-nix-mk-iv kernel: [213336.524786] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 22:07:41 prp-tn-nix-mk-iv kernel: [213420.772726] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 22:43:41 prp-tn-nix-mk-iv kernel: [215580.888734] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 23:31:07 prp-tn-nix-mk-iv kernel: [216136.075171] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 23:38:51 prp-tn-nix-mk-iv kernel: [216599.784885] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 23:43:41 prp-tn-nix-mk-iv kernel: [216889.335360] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 23:43:55 prp-tn-nix-mk-iv kernel: [216903.775710] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe A
Sep 30 23:43:55 prp-tn-nix-mk-iv kernel: [216903.775724] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
Sep 30 23:43:55 prp-tn-nix-mk-iv kernel: [216903.812338] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
Sep 30 23:45:04 prp-tn-nix-mk-iv kernel: [216960.153895] [drm:intel_dp_link_training_channel_equalization [i915]] *ERROR* failed to train DP, aborting
我之前遇到过很多与挂起有关的问题，但这是第一次重新启动失败：c
有什么想法吗？