Difference between revisions of "Talk:USB storage devices"

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(device descriptor read error: new section)
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I tried to follow the instructions in "Mounting the USB stick as normal user with Fstab," but it didn't work. Said I had permissions errors when I tried to open the /mnt/usbstick. So, I tried replacing: <br>
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== device descriptor read error ==
/dev/sda1 /mnt/usbstick vfat rw,noauto,async,user 0 0 <br>
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with <br>
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/dev/sda1 /mnt/usbstick vfat rw,noauto,async,user,umask=1000 0 0 <br>
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(because that's what they did in the previous section) <br>
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I'm not sure if it is worth mentioning (I am an arch noob)- is the current info wrong or is my setup goofy somehow (I don't think I've changed anything that would make this not work...) [[User:Braegan|Braegan]] 20:15, 26 May 2010 (EDT)
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== Fails to detect USB Storage devices ==
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Some USB controllers will be loaded with the wrong USB standard applied (e.g. a USB 3.0 controller is initialized with a USB 2.0 kernel module assigned) causing a loss of performance and an error message that looks something like "device descriptor read/64, error -32" at boot time. A supposed fix I found involves issuing the following command as root: "echo -1 >/sys/module/usbcore/parameters/autosuspend". Since I don't have a USB storage device handy it's hard for me to verify that the performance impact was fixed, but I can verify that this at least supressed the error message. This also does not specifically pertain to USB storage devices, but there is not a wiki page specifically for general USB controller usage and I didn't find it in order to create one just to add a single troubleshooting step. [[User:Mynis|Mynis]] ([[User talk:Mynis|talk]]) 21:24, 14 December 2013 (UTC)
 
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My install failed to detect any USB storage devices until I loaded the scsi-generic driver:
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modprobe sg
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I made a file in /etc/modules-loaded.d/scsi-generic.conf so that it loads at start up.
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[[User:AdmiralAkber|AdmiralAkber]] ([[User talk:AdmiralAkber|talk]]) 02:27, 26 February 2013 (UTC)
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Revision as of 21:24, 14 December 2013

device descriptor read error

Some USB controllers will be loaded with the wrong USB standard applied (e.g. a USB 3.0 controller is initialized with a USB 2.0 kernel module assigned) causing a loss of performance and an error message that looks something like "device descriptor read/64, error -32" at boot time. A supposed fix I found involves issuing the following command as root: "echo -1 >/sys/module/usbcore/parameters/autosuspend". Since I don't have a USB storage device handy it's hard for me to verify that the performance impact was fixed, but I can verify that this at least supressed the error message. This also does not specifically pertain to USB storage devices, but there is not a wiki page specifically for general USB controller usage and I didn't find it in order to create one just to add a single troubleshooting step. Mynis (talk) 21:24, 14 December 2013 (UTC)