Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
Hi
One of my laptops (installed with arch linux) has a non-repairable faulty audio jack, so I use USB sound card in order use a headphone. However, sometimes suddenly the system freezes and I have to hard reset it. Journalctl is showing following error:
Code:
Jul 08 23:32:19 laptop1 pulseaudio[635]: W: [alsa-sink-USB Audio] alsa-util.c: Got POLLNVAL from ALSA
Jul 08 23:32:19 laptop1 pulseaudio[635]: W: [alsa-sink-USB Audio] alsa-util.c: Could not recover from POLLERR|POLLNVAL|POLLHUP wi
Jul 08 23:32:19 laptop1 kernel: usb 1-2: reset full-speed USB device number 4 using xhci_hcd
Jul 08 23:32:19 laptop1 kernel: usb 1-2: device descriptor read/64, error -71
Jul 08 23:32:19 laptop1 kernel: usb 1-2: device descriptor read/64, error -71
Jul 08 23:32:20 laptop1 kernel: usb 1-2: reset full-speed USB device number 4 using xhci_hcd
Jul 08 23:32:20 laptop1 kernel: usb 1-2: device descriptor read/64, error -71
Jul 08 23:32:20 laptop1 kernel: usb 1-2: device descriptor read/64, error -71
Jul 08 23:32:20 laptop1 kernel: usb 1-2: reset full-speed USB device number 4 using xhci_hcd
Although I am unfamiliar to these errors but one thing that I am sure about is that the problem is happening due USB. Kindly help me to solve this problem.
Regards
These posts are very old and talking about USB 1.1 and USB 2.0. However, my laptop has USB 3.0 and the sound card is also new (bought 4 months ago). Here is the output of lsusb:
Code:
Bus 003 Device 002: ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controller
Are these things still applicable to linux? I doubt that!
No, your hard drive is fine! That would be /dev/sda — /dev/sr1 is an optical drive. Do you have a disk in the drive when you boot up?
That error code on the USB device seems to be indicative of a very low-level problem: the computer finds the device unusable. Did you try using different ports, both USB2 and USB3? Have you tried the device on a different computer? I'd expect a fault in the device to show up more often, though, and it's strange that it should cause a lock-up. If the audio jack stopped working, it might be that the USB controller is about to go too.
These sort of occasional failings can be very difficult to track down. This computer crashes about once a month. After making sure the memory wasn't faulty, I decided to live with it.
No, your hard drive is fine! That would be /dev/sda — /dev/sr1 is an optical drive. Do you have a disk in the drive when you boot up?
No, dvdrom is empty.
Quote:
That error code on the USB device seems to be indicative of a very low-level problem: the computer finds the device unusable. Did you try using different ports, both USB2 and USB3? Have you tried the device on a different computer? I'd expect a fault in the device to show up more often, though, and it's strange that it should cause a lock-up. If the audio jack stopped working, it might be that the USB controller is about to go too.
These sort of occasional failings can be very difficult to track down. This computer crashes about once a month. After making sure the memory wasn't faulty, I decided to live with it.
This also happens if I plug/unplug USB device 3-4 times consistently.
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.