Hello,

 

When checking Fix Common Problems it is showing " irq 16: nobody cared "

 

I have attached my syslog if that helps.

 

Thanks,
Connor

syslog.txt

syslog.txt

Edited September 15, 20187 yr by Conmyster

This is quite a common error. Often it can be ignored but it really depends on what is using IRQ 16. In your case it is a USB controller:

May  9 17:04:20 ctower kernel: ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
May  9 17:04:20 ctower kernel: ehci-pci: EHCI PCI platform driver
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: EHCI Host Controller
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 1
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: debug port 2
May  9 17:04:20 ctower kernel: DMAR: 32bit 0000:00:1a.0 uses non-identity mapping
May  9 17:04:20 ctower kernel: DMAR: Setting identity map for device 0000:00:1a.0 [0xdbe8d000 - 0xdbe9bfff]
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: cache line size of 64 is not supported
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: irq 16, io mem 0xf7c3b000
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
May  9 17:04:20 ctower kernel: hub 1-0:1.0: USB hub found
May  9 17:04:20 ctower kernel: hub 1-0:1.0: 2 ports detected

which would be a problem if your USB boot device is using it. You could either choose not to use the affected controller or look for a BIOS update.

10 minutes ago, John_M said:

This is quite a common error. Often it can be ignored but it really depends on what is using IRQ 16. In your case it is a USB controller:

May  9 17:04:20 ctower kernel: ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
May  9 17:04:20 ctower kernel: ehci-pci: EHCI PCI platform driver
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: EHCI Host Controller
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 1
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: debug port 2
May  9 17:04:20 ctower kernel: DMAR: 32bit 0000:00:1a.0 uses non-identity mapping
May  9 17:04:20 ctower kernel: DMAR: Setting identity map for device 0000:00:1a.0 [0xdbe8d000 - 0xdbe9bfff]
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: cache line size of 64 is not supported
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: irq 16, io mem 0xf7c3b000
May  9 17:04:20 ctower kernel: ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
May  9 17:04:20 ctower kernel: hub 1-0:1.0: USB hub found
May  9 17:04:20 ctower kernel: hub 1-0:1.0: 2 ports detected

which would be a problem if your USB boot device is using it. You could either choose not to use the affected controller or look for a BIOS update.

 

Is there anyway to know which ports are affected?

 

The Boot USB is plugged into the back I/O and is working fine.

Edited May 9, 20188 yr by Conmyster

Your diagnostics or the output of

lsusb -t

would confirm. The affected controller might just be connected to an unused header on the motherboard.