我的 Ubuntu 15.10 启动非常慢。这是我的dmesg输出：
...
[ 10.045029] VBoxPciLinuxInit
[ 10.048193] vboxpci: IOMMU not found (not registered)
[ 10.396115] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 10.396118] Bluetooth: BNEP filters: protocol multicast
[ 10.396122] Bluetooth: BNEP socket layer initialized
[ 10.411786] Bluetooth: RFCOMM TTY layer initialized
[ 10.411792] Bluetooth: RFCOMM socket layer initialized
[ 10.411797] Bluetooth: RFCOMM ver 1.11
[ 11.866507] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[ 11.866536] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun
[ 94.430576] cfg80211: Regulatory domain changed to country: SK
[ 94.430579] cfg80211: DFS Master region: ETSI
[ 94.430580] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 94.430582] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 94.430583] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[ 94.430584] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[ 94.430586] cfg80211: (5490000 KHz - 5710000 KHz @ 160000 KHz), (N/A, 2700 mBm), (0 s)
[ 94.430587] cfg80211: (57000000 KHz - 66000000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
我认为该问题大约发生在 94 秒左右，但我不知道如何解决它。
答案1
Linux 内核中似乎存在一些与此相关的错误：