我有一台运行Blackmagic Decklink卡和usbscreen的电脑。 我遇到的问题是事端irq冲突发生，操作系统禁用irq16女巫甲板连接卡和USB屏幕连接到。 如果我删除dvi电缆服务器“哔哔”，并得到这个错误：
[ 557.103401] irq 16: nobody cared (try booting with the "irqpoll" option) [ 557.103530] handlers: [ 557.103584] [<ffffffffa000c2d9>] (usb_hdc_irq+0x0/0x74 [usbcore]) [ 557.103735] [<ffffffffa019e06e>] (blackmagic_isr+0x0/0x30 [blackmagic]) [ 557.103867] [<ffffffffa000c2d9>] Disabling IRQ #16 之后，更新的USB屏幕非常缓慢。 之后，甲板连卡又变得更加怪异了。 我觉得很奇怪，所有这一切都是从拔掉dvi电缆来的。
我已经将USB屏幕移到另一个USB端口ehci_usb3，当我得到错误只有甲板连接卡我受到影响。
我正在运行Debian 6.0.4自定义内核。 我已经添加了一个补丁，允许写入hidraw设备。 我在其他内核上使用了相同的内核补丁，例如ubuntu 10.04的input问题。 我不太了解irq，如果问题与内核或硬件有关，主板或decklink卡
这里是我的输出从lspci：
00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09) Subsystem: Intel Corporation Device 2000 Flags: bus master, fast devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> 00:01.0 PCI bridge: Intel Corporation Sandy Bridge PCI Express Root Port (rev 09) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Memory behind bridge: fe400000-fe5fffff Capabilities: [88] Subsystem: Intel Corporation Device 2000 Capabilities: [80] Power Management version 3 Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [a0] Express Root Port (Slot+), MSI 00 Capabilities: [100] Virtual Channel Capabilities: [140] Root Complex Link Kernel driver in use: pcieport 00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation Device 2000 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at fe000000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features 00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04) Subsystem: Intel Corporation Device 2000 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at fe729000 (64-bit, non-prefetchable) [size=16] Capabilities: [50] Power Management version 3 Capabilities: [8c] MSI: Enable- Count=1/1 Maskable- 64bit+ 00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05) Subsystem: Intel Corporation Device 2000 Flags: bus master, fast devsel, latency 0, IRQ 27 Memory at fe700000 (32-bit, non-prefetchable) [size=128K] Memory at fe728000 (32-bit, non-prefetchable) [size=4K] I/O ports at f080 [size=32] Capabilities: [c8] Power Management version 2 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [e0] PCI Advanced Features Kernel driver in use: e1000e 00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI]) Subsystem: Intel Corporation Device 2000 Flags: bus master, medium devsel, latency 0, IRQ 16 Memory at fe727000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 05) Subsystem: Intel Corporation Device 2000 Flags: bus master, fast devsel, latency 0, IRQ 22 Memory at fe720000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: HDA Intel 00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b5) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Intel Corporation Device 2000 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b5) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 Memory behind bridge: fe600000-fe6fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Intel Corporation Device 2000 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI]) Subsystem: Intel Corporation Device 2000 Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at fe726000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd 00:1f.0 ISA bridge: Intel Corporation Cougar Point LPC Controller (rev 05) Subsystem: Intel Corporation Device 2000 Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> 00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0]) Subsystem: Intel Corporation Device 2000 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 28 I/O ports at f0d0 [size=8] I/O ports at f0c0 [size=4] I/O ports at f0b0 [size=8] I/O ports at f0a0 [size=4] I/O ports at f060 [size=32] Memory at fe725000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Power Management version 3 Capabilities: [a8] SATA HBA v1.0 Capabilities: [b0] PCI Advanced Features Kernel driver in use: ahci 00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 05) Subsystem: Intel Corporation Device 2000 Flags: medium devsel, IRQ 18 Memory at fe724000 (64-bit, non-prefetchable) [size=256] I/O ports at f040 [size=32] Kernel driver in use: i801_smbus 01:00.0 Multimedia video controller: Blackmagic Design Device a11b Subsystem: Blackmagic Design Device a11b Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fe500000 (32-bit, non-prefetchable) [size=1M] Memory at fe400000 (64-bit, non-prefetchable) [size=1M] Capabilities: [40] Power Management version 3 Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [58] Express Endpoint, MSI 00 Capabilities: [100] Device Serial Number 00-00-00-01-00-00-0a-35 Kernel driver in use: blackmagic_driver 03:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03) (prog-if 30) Subsystem: Intel Corporation Device 2000 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at fe600000 (64-bit, non-prefetchable) [size=8K] Capabilities: [50] Power Management version 3 Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+ Capabilities: [90] MSI-X: Enable- Count=8 Masked- Capabilities: [a0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff Capabilities: [150] #18 Kernel driver in use: xhci_hcd
和/ proc / interrupts：
CPU0 CPU1 CPU2 CPU3 0: 58 0 0 0 IO-APIC-edge timer 1: 2 0 0 0 IO-APIC-edge i8042 8: 1 0 0 0 IO-APIC-edge rtc0 9: 0 0 0 0 IO-APIC-fasteoi acpi 12: 4 0 0 0 IO-APIC-edge i8042 16: 200026 0 0 0 IO-APIC-fasteoi ehci_hcd:usb2, blackmagic0 17: 0 0 0 0 IO-APIC-fasteoi xhci_hcd:usb1 22: 334 0 0 0 IO-APIC-fasteoi HDA Intel 23: 2402840 0 0 0 IO-APIC-fasteoi ehci_hcd:usb3 27: 2400 0 0 0 PCI-MSI-edge eth0 28: 2424 0 0 0 PCI-MSI-edge ahci NMI: 0 0 0 0 Non-maskable interrupts LOC: 1213946 1031369 800145 621285 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 0 0 0 0 Performance monitoring interrupts PND: 0 0 0 0 Performance pending work RES: 21023 55637 30534 18820 Rescheduling interrupts CAL: 66 67 89 92 Function call interrupts TLB: 150716 125506 175584 150345 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 18 18 18 18 Machine check polls ERR: 0 MIS: 0