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Ultraman

Member

Registered: 2009-12-24

Posts: 242

uhci_hcd spamming my logs

Recently I noticed my /var partition was completely filled up. After a "wtf?", I started looking into what might be causing my issues.
I started with cleaning up the pacman cache using "pacman -Sc", as I did not remember doing that ever on this machine.
This helped a bit, but not much. I was still occupying over 7GB on /var.

After checking space usage I noticed /var/log was the culprit, weighing a whopping 5.8GB's!

My logs rotate fine, but all my rotated files were about 550MB a piece. (!)
So I checked the contents and this is a snippet whats happening in my /var/log/messages:

Mar  1 10:52:55 aether kernel: uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Mar  1 10:52:55 aether kernel: uhci_hcd 0000:00:1a.0: PCI INT A disabled
Mar  1 10:52:55 aether kernel: uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Mar  1 10:52:55 aether kernel: uhci_hcd 0000:00:1a.0: PCI INT A disabled
Mar  1 10:52:55 aether kernel: uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Mar  1 10:52:55 aether kernel: uhci_hcd 0000:00:1a.0: PCI INT A disabled
Mar  1 10:52:55 aether kernel: uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16

Hundreds of these lines every second.
I happen to know I had some USB devices plugged in at the time, 2 usb sticks to be more exact.

I have fiddled around with USB auto suspend later this afternoon, as I feel this might have something to do with this.
So I'm going to see if disabling this helps me in any way.

I need some USB devices to plug in to see if I can reproduce these events. Which I do not have with me at the moment, so I'll see if I can update this info after I get home.

I would appreciate the thoughts of my fellow Archers on this, and ideas on how I can suppress these messages.

Ultraman

Member

Registered: 2009-12-24

Posts: 242

Re: uhci_hcd spamming my logs

I made a discovery which might be related to this: here

Although this does not trigger log spam.
Might be the case this only happens after bootup.
I'm experimenting to see if this is the case and whether I can reproduce.

I disabled USB auto-suspend in my modprobe.conf and laptop-mode-tools configuration, hope it helps.

Last edited by Ultraman (2011-03-01 22:02:39)

Ultraman

Member

Registered: 2009-12-24

Posts: 242

Re: uhci_hcd spamming my logs

Disabling the USB auto-suspend features did not help me.
I can confirm that the log spamming only occurs when this thrashing happens right after booting.
When I reload the modules and the thrashing starts again, there is no log written about it.

I have now added "pcie_ports=compat" to my bootline, this seems to alleviate the problem upon booting from battery.
I've yet to plug in USB devices to check if this really solves my problem.