Error Module Uhci_hcd Does Not Exist In /proc/modules
have done a bit of research before posting a new thread, but it had no satisfactory result (or not one easy enough for a noob like me), so here I am. I can't make my USB flash drive transfer data at a reasonable speed. The transfer rate is about 100 KB/s and that's a pain, since I have to copy files adding up to several GBs. Once (but only once) the speed went up to 7 MB/s and it was something rather "mysterious", I haven't done anything to cause that (or so I think). System Settings> Disk Utility points that the USB drive is recognized as 2.0 and the connection speed is 480.0 MB/s, not 12 or any other value. The only result that rmmod ehci_hcd has is the following error: ERROR: Module ehci_hcd does not exist in /proc/modules So I can't unloadi ehci_hcd and uhci_hcd and reload them. And I ran out of applicable ideas, any help would be much appreciated. PS: I'm using Natty and it's my first non-Windows experience, so I can't say whether or not it would've worked well with the previous versions. LowSkyAugust 9th, 2011, 01:26 AMThis is a long standing bug in Linux. The reason it is long standing is because its almost a phantom. Many of the developers cannot duplicate it and unfortunately it is usually seen by new comers who have no idea what to report. the reason it so rare is because somehow very few linux users are placing gigabytes worth of data onto a flash drive. If you want to see faster results add the files slowly it seems to say faster that way. I filed a bug a few years ago about the same issue. I noticed the problem effected only my AMD powered machines (athlon64 in my experience). It seems to only effect USB thumb drives, hard drives connected by USB seem to work fine. Bitter JaneAugust 9th, 2011, 04:37 PMInteresting pieces of information. My laptop, however, is based on Intel. While I don't have the possibility to test an external hard drive at the moment, it could be an alternative, as well as personal file storage services (to an extent, obviously). I found out quite a few people had problems even with all their usb peripherals, so I'm lucky! Also, I was wondering whether a kernel upgrade or (rather) downgrade could be of any use. On another thread related to the same issue, an Ubuntu user of
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SMP Thu Jan 28 02:39:34 UTC 2010 x86_64 GNU/Linux This seems to be an ongoing problem from what I've been able to find, the more https://answers.launchpad.net/ubuntu/+question/102829 I find the more confused I get as to where the problems is, anyway... I have an internal card reader, I boot up my machine and the card reader https://sourceforge.net/p/gphoto/mailman/gphoto-user/thread/20071118213656.GA18392@galeere/ is visible under my computer as one would expect with all slots graphically listed, everything seems fine, I insert a card (SD/SDHC) the card gets mounted and the contents error module displayed. Copying of files starts fast and then slows to a crawl, when I 'safely remove' the card the card reader and slots disappear and I have to reboot in order to repeat the above process. Browsing the forums has revealed nothing that seems to solve my particular problem (or I'm doing something wrong) The following are the output error module uhci_hcd of various commands that I've seen referenced in posts throughout the forums. Any help would be greatly appreciated. jimf@mimir:~$ sudo rmmod ehci_hcd ERROR: Module ehci_hcd does not exist in /proc/modules jimf@mimir:~$ sudo modprobe ehci_hcd FATAL: Module ehci_hcd not found. jimf@mimir:~$ sudo rmmod ohci_hcd ERROR: Module ohci_hcd does not exist in /proc/modules jimf@mimir:~$ sudo modprobe ohci_hcd FATAL: Module ohci_hcd not found. jimf@mimir:~$ sudo lshw capabilities: smbios-2.4 dmi-2.4 vsyscall64 vsyscall32 configuration: boot=normal chassis=desktop uuid=40EE5C99-E625-DC11-A195-001BFC70C8B2 *-core description: Motherboard product: M2A-VM vendor: ASUSTeK Computer INC. physical id: 0 version: 1.XX serial: 123456789000 *-firmware description: BIOS vendor: Phoenix Technologies, LTD physical id: 0 version: ASUS M2A-VM ACPI BIOS Revision 0804 (06/15/2007) size: 128KiB capacity: 960KiB capabilities: isa pci pnp apm upgrade shadowing cdboot bootselect socketedrom edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb agp ls120boot zipboot biosbootspecification *-cpu description: CPU product: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ vendor: Advanced Micro Devices [AMD] physical id: 4 bus info: cpu@0 version: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ slot: Socket AM2 size: 1GHz capacity: 3800M
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