我有一台 HP Pavillion DV6-1149wm，Ubuntu 11.04。我有 2 个 USB3.0 端口和 2 个 USB2.0 端口。如果我长时间使用 USB 端口（例如使用我的 USB WiFi 适配器），该特定 USB 端口（有时它们成对停止）会随机决定停止。
重新启动后，一切都恢复正常，但一直重新启动是不切实际的。
以下是lsusb[虽然 4 个 USB 端口中只有 1 个可以工作]：
matt: ~ $ lsusb
Bus 006 Device 003: ID 0cde:001a Z-Com 802.11bg
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 004 Device 002: ID 138a:0018 DigitalPersona, Inc
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 5986:02ac Acer, Inc
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Z-Com 是我的 WiFi 适配器，目前插入我最后一个可用的 USB 端口 [直到我重新启动]。我的其他 3 个 USB 端口均不工作。我插入闪存驱动器，指示灯亮起，但仅此而已。有时它会在插入后约 5 秒关闭。但当我插入时，系统日志上没有任何内容。
这是lspci：
00:00.0 Host bridge: Advanced Micro Devices [AMD] Device 1705
00:01.0 VGA compatible controller: ATI Technologies Inc Device 9647
00:01.1 Audio device: ATI Technologies Inc Device 1714
00:04.0 PCI bridge: Advanced Micro Devices [AMD] Device 1709
00:05.0 PCI bridge: Advanced Micro Devices [AMD] Device 170a
00:06.0 PCI bridge: Advanced Micro Devices [AMD] Device 170b
00:10.0 USB Controller: Advanced Micro Devices [AMD] Hudson USB XHCI Controller (rev 03)
00:10.1 USB Controller: Advanced Micro Devices [AMD] Hudson USB XHCI Controller (rev 03)
00:11.0 SATA controller: Advanced Micro Devices [AMD] Hudson SATA Controller [AHCI mode]
00:12.0 USB Controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11)
00:12.2 USB Controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11)
00:13.0 USB Controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11)
00:13.2 USB Controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11)
00:14.0 SMBus: Advanced Micro Devices [AMD] Hudson SMBus Controller (rev 13)
00:14.1 IDE interface: Advanced Micro Devices [AMD] Hudson IDE Controller (rev 40)
00:14.2 Audio device: Advanced Micro Devices [AMD] Hudson Azalia Controller (rev 01)
00:14.3 ISA bridge: Advanced Micro Devices [AMD] Hudson LPC Bridge (rev 11)
00:14.4 PCI bridge: Advanced Micro Devices [AMD] Hudson PCI Bridge (rev 40)
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6
00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5
00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5209 (rev 01)
需要注意的是，我最常用的 USB 设备是 WiFi 适配器。[长距离 Wi-Fi] 我用来插入它的 USB 延长线已经很旧了，我不得不用胶带把两端粘起来，以防止电线断裂（因为来回移动了这么多次）。插入故障的 USB 设备是否会导致 USB 端口暂时停止工作？
答案1
我在搜索有关“irqpoll”启动选项的信息时遇到了以下内容......
添加 ”acpi=强制 irqpoll“ 启动选项。
与此有些矛盾的是，这个问题建议使用“noacpi”而不是“irqpoll”来修复 USB 问题。