external USB hdd not detected first time plugged in
external USB hdd not detected first time plugged in
I have a computer that is giving good service. Because the motherboard has only USB 1.1 ports, I had to modify this computer by installing a PCI card with 4 USB 2.0 ports. Those ports are inconveniently located in back of the computer, and the computer is in a tight space. When I plug an external USB hard drive into the 2.0 ports, the device is not detected by Pmount the first time. So I have to create another event by removing the plug and plugging into another 2.0 port on the same card. This is very inconvenient because of the location in back of the computer, plus the plug is physically upside down because of the card. I have initially plugged in under all circumstances (external hdd not spinning, external hdd already spun up, plugging into the same port twice) but I always have to plug it in a second time into another port, and even occasionally a third time. Any suggestions?
Could it depend on low current got by only a usb port? I have an external hd with a particular cable with two usb adaptors at an end: one for data transferring and one for power. In some situation plugging only one usb the hd does not work. I have to plug both usb. Alternatively I can use a second cable with jack for usb-jack powering. Can you power the hd independently from data-usb?
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@ watchdog
The external hdd has it's own power supply from mains.
@ bark_bark_bark
Do you think some cards are better than others, or is the motherboard just intolerant to all cards?
@ flash
When I say Pmount I am referring to the small applet called by the 'mount' icon on desktop. The icon for the USB device doesn't usually appear unless Pmount is called and subsequently refreshed. I don't believe that waiting for the drive to be detected is a course of action, because I have waited for over a half hour and detection never occurred. I typically connect the USB external hdd a second time within a minute of the first insertion, after which the drive is detected by refreshing Pmount. Refreshing Pmount after the second insertion causes the USB device icon to appear. When this odd behavior first occurred I mistakenly believed that the port on the card went dead, but this is not true. It seems that the (unmounted) USB device icon does not appear until Pmount is refreshed to detect the second insertion.
If the USB external hdd were detected at the first insertion I could use a USB extension cord to make the operation more convenient. But since proper detection requires a second insertion I have to reach around back, blindly, to re-insert the USB connector, which can be occasionally quite tedious.
The external hdd has it's own power supply from mains.
@ bark_bark_bark
Do you think some cards are better than others, or is the motherboard just intolerant to all cards?
@ flash
When I say Pmount I am referring to the small applet called by the 'mount' icon on desktop. The icon for the USB device doesn't usually appear unless Pmount is called and subsequently refreshed. I don't believe that waiting for the drive to be detected is a course of action, because I have waited for over a half hour and detection never occurred. I typically connect the USB external hdd a second time within a minute of the first insertion, after which the drive is detected by refreshing Pmount. Refreshing Pmount after the second insertion causes the USB device icon to appear. When this odd behavior first occurred I mistakenly believed that the port on the card went dead, but this is not true. It seems that the (unmounted) USB device icon does not appear until Pmount is refreshed to detect the second insertion.
If the USB external hdd were detected at the first insertion I could use a USB extension cord to make the operation more convenient. But since proper detection requires a second insertion I have to reach around back, blindly, to re-insert the USB connector, which can be occasionally quite tedious.
Last edited by nubc on Thu 17 Jan 2013, 21:43, edited 2 times in total.
.pup_event
A thing I should try is deleting /root/.pup_event and reboot...
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- Posts: 1885
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- Location: Wisconsin USA
I've seen similar behavior in Windows when I try to connect with a USB ethernet adapter. After the first insertion, Windows detects the adapter and then chokes, giving a message that the device has problems and might not work. If I re-insert the adapter, preferably into another USB port, the problem clears and the connection begins working, without any more complaining from Windows and without having to reboot.
This motherboard has the same model number as another motherboard which has USB 2.0. The only difference between the two boards is the version number, so this problematic motherboard was manufactured just before USB 2.0 became standard.
This motherboard has the same model number as another motherboard which has USB 2.0. The only difference between the two boards is the version number, so this problematic motherboard was manufactured just before USB 2.0 became standard.
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- Posts: 1885
- Joined: Tue 05 Jun 2012, 12:17
- Location: Wisconsin USA
From a forum post:
http://forums.driverguide.com/showthread.php?t=3723
Could this be the problem, that onboard USB 1.1 is not disabled?Note: If your machine has built-in usb 1.1, then enter pc bios setup and disable it before installing this USB 2.0 pci card into the machine.
http://forums.driverguide.com/showthread.php?t=3723