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Hi: being in the GUI, the keyboard suddenly becomes unresponsive and I have no remedy but to press the machine's reset button. I have never observed this failure while in ...
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  1. #1
    Just Joined!
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    Apr 2014
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    Keyboard becomes unresponsive under the GUI.


    Hi: being in the GUI, the keyboard suddenly becomes unresponsive and I have no remedy but to press the machine's reset button. I have never observed this failure while in one of text consoles (/dev/ttyN). When booting, the screen first prints data pertaining to the graphics card (Nvidia). Then:

    AMIBIOS(c) 2003 American Megatrends, Inc.
    P4i65G BIOS P1.00

    and line 25 reads:
    <big number sequence>-INTEL-P4i6G013-Y2KC

    The keyboard is USB. I have it plugged into one of the machine USB jacks.
    Code:
    local:~# lspci
    00:00.0 Host bridge: Intel Corporation 82865G/PE/P DRAM Controller/Host-Hub Interface (rev 02)
    00:01.0 PCI bridge: Intel Corporation 82865G/PE/P PCI to AGP Controller (rev 02)
    00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
    00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
    00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02)
    00:1d.3 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02)
    00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
    00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
    00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02)
    00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02)
    00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
    00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
    01:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 4000] (rev c1)
    02:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
    local:~#
    This has happened under both slackware 12.0 and slackware 14.0 running Xfce 4. Sometimes, unplugging the keyboard and plugging it into another USB jack brings it again to life. One thing can be relevant. In order for the keyboard to be recognized, in the BIOS setup menu, I have to choose 'Legacy USB enabled: yes'. If I don't do this, after quiting the BIOS menu, which takes me to the bootloader (lilo) prompt, the keyboard will not respond. This is all the information I am aware of at this moment. What can possibly be the mystery behind this strange behavior?

  2. #2
    Linux Guru
    Join Date
    Jul 2008
    Posts
    4,205
    What can possibly be the mystery behind this strange behavior?
    Bad cable connection in keyboard, maybe? I guess you don't have another keyboard with usb or ps2 to test with.
    That is what I would do first is switch out keyboards.

    . Sometimes, unplugging the keyboard and plugging it into another USB jack brings it again to life.
    Just my take on that. Removing and replugging in resets the loose cable connection from the movement involved.

  3. #3
    Just Joined!
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    Apr 2014
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    I do not think it's a broken cable problem, because of this: I have two machines and two keyboards. One: The present keyboard (the suspected one) with the other machine (which is a newer generation) never presented this problem. Two: the other keyboard (also USB) with this machine never presented this problem.

    However, for the latter combination, I use a USB to PS/2 adapter.

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