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#8 Driver Error

open
nobody
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5
2026-02-21
2026-02-21
Gregory McDonald
No

I have an older pc that I had lcdproc running on for years using an old parallel port lcd. It worked up to the day the hard drive died. I installed a new ssd drive with a fresh install of Ubuntu 24.04 LTS. After installing lcdproc 0.5.9-7build2 and configuring I can't get the display to work.

After many hours of testing and debugging I found this:

/usr/lib/lcdproc/hd44780.so: error: symbol lookup error: undefined symbol: HD44780_heartbeat (fatal)

From what I gather this is the result of some library incompatibility issue but considering the fresh installs not sure were I went wrong. It is the right version lcdproc for 24.04 ?

Much appreciate any guidance.

-Greg

Related

Support Requests: #8

Discussion

  • Gregory McDonald

    Gregory McDonald - 2026-02-23

    Update:

    I deleted lcdproc and updated the libraries and then reinstalled lcdproc
    and everything runs now with no errors. I can telnet "localhost 13666"
    and get the proper response for "Hello" but still no display.

    I've reviewed conf settings over and over

    Here's the relevant output of lspci -v

    05:00.0 Communication controller: MosChip Semiconductor Technology Ltd.
    PCI 9815 Multi-I/O Controller (rev 01)
        Subsystem: Broadcom / LSI 2P0S (2 port parallel adaptor)
        Flags: medium devsel, IRQ 17
        I/O ports at bc00 [size=8]
        I/O ports at b880 [size=8]
        I/O ports at b800 [size=8]
        I/O ports at b480 [size=8]
        I/O ports at b400 [size=8]
        I/O ports at b080 [size=16]
        Kernel driver in use: parport_pc
        Kernel modules: parport_pc

    Here's the relevant section of LCDd.conf

    Hitachi HD44780 driver

    [hd44780]

    Select what type of connection. See documentation for availabe types.

    ConnectionType=winamp

    I/O address of the LPT port. Usual values are: 0x278, 0x378 and 0x3BC.

    For I2C connections this sets the slave address (usually 0x20).

    Port=0xbc00

    Device of the serial, I2C, or SPI interface [default: /dev/lcd]

    Device=/dev/parport_pc

    Bitrate of the serial port (0 for interface default)

    Speed=0

    If you have a keypad connected.

    You may also need to configure the keypad layout further on in this file.

    Keypad=no

    Set the initial contrast (bwctusb, lcd2usb, and usb4all)

    [default: 800; legal: 0 - 1000]

    Contrast=0

    Set brightness of the backlight (lcd2usb and usb4all):

    Brightness is the brightness while the backlight is set to 'on'.

    [default: 800; legal: 0 - 1000]

    Brightness=1000

    I've tried many variations of the above settings

    Any help would be much appreciated. Thnx -Greg

    On 2/21/26 18:59, Gregory McDonald wrote:

    [support-requests:#8]
    https://sourceforge.net/p/lcdproc/support-requests/8/ Driver Error

    Status: open
    Group:
    Created: Sat Feb 21, 2026 11:59 PM UTC by Gregory McDonald
    Last Updated: Sat Feb 21, 2026 11:59 PM UTC
    Owner: nobody

    I have an older pc that I had lcdproc running on for years using an
    old parallel port lcd. It worked up to the day the hard drive died. I
    installed a new ssd drive with a fresh install of Ubuntu 24.04 LTS.
    After installing lcdproc 0.5.9-7build2 and configuring I can't get the
    display to work.

    After many hours of testing and debugging I found this:

    /usr/lib/lcdproc/hd44780.so: error: symbol lookup error: undefined
    symbol: HD44780_heartbeat (fatal)

    From what I gather this is the result of some library incompatibility
    issue but considering the fresh installs not sure were I went wrong.
    It is the right version lcdproc for 24.04 ?

    Much appreciate any guidance.

    -Greg

    Sent from sourceforge.net because you indicated interest in
    https://sourceforge.net/p/lcdproc/support-requests/8/

    To unsubscribe from further messages, please visit
    https://sourceforge.net/auth/subscriptions/

     

    Related

    Support Requests: #8

    alternate

    • Gregory McDonald

      Gregory McDonald - 2026-02-23

      Thanks for the reply but I did read the docs and I did start with those
      options and when that didn't work I've been on an endless search for any
      combination that would searching for clues or errors that would lead to
      clues

      But I have a new issue now

      After setting the LCDd.conf to the defaults I found that after a cold
      restart an inspection of the journal shows:

      Feb 23 13:39:03 AsusMediaServer systemd[1]: LCDd.service: Control
      process exited, code=exited, status=1/FAILURE
      Feb 23 13:39:03 AsusMediaServer LCDd[1567]: sock_create_inet_socket:
      cannot bind to port 13666 at address 127.0.0.1 ->
      Feb 23 13:39:03 AsusMediaServer systemd[1]: LCDd.service: Failed with
      result 'exit-code'.
      Feb 23 13:39:03 AsusMediaServer LCDd[1567]: sock_init: error creating
      socket - Address already in use
      Feb 23 13:39:03 AsusMediaServer systemd[1]: Failed to start LCDd.service

      • LCDd.
        Feb 23 13:39:03 AsusMediaServer LCDd[1567]: Critical error while
        initializing, abort.
        Feb 23 13:39:03 AsusMediaServer systemd[1]: LCDd.service: Scheduled
        restart job, restart counter is at 5.
        Feb 23 13:39:03 AsusMediaServer systemd[1]: LCDd.service: Start request
        repeated too quickly.
        Feb 23 13:39:03 AsusMediaServer systemd[1]: LCDd.service: Failed with
        result 'exit-code'.
        Feb 23 13:39:03 AsusMediaServer systemd[1]: Failed to start LCDd.service
      • LCDd.

      and

      sudo lsof -i :13666
      COMMAND  PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
      LCDd    1082 nobody    3u  IPv4  11077      0t0  TCP localhost:13666
      (LISTEN)

      This was after a complete shutdown wait 5 min restart and check the journal

      Notice the restart value shows at 5 and the journal for this startup
      clearly shows 5 start attempts with each one showing the same error
      socket in use

      How could it in use on initial startup and if it was it's not another
      process it's LCDd?

      On 2/23/26 10:07, Gregory McDonald wrote:

      Update:

      I deleted lcdproc and updated the libraries and then reinstalled lcdproc
      and everything runs now with no errors. I can telnet "localhost 13666"
      and get the proper response for "Hello" but still no display.

      I've reviewed conf settings over and over

      Here's the relevant output of lspci -v

      05:00.0 Communication controller: MosChip Semiconductor Technology Ltd.
      PCI 9815 Multi-I/O Controller (rev 01)
          Subsystem: Broadcom / LSI 2P0S (2 port parallel adaptor)
          Flags: medium devsel, IRQ 17
          I/O ports at bc00 [size=8]
          I/O ports at b880 [size=8]
          I/O ports at b800 [size=8]
          I/O ports at b480 [size=8]
          I/O ports at b400 [size=8]
          I/O ports at b080 [size=16]
          Kernel driver in use: parport_pc
          Kernel modules: parport_pc

      Here's the relevant section of LCDd.conf

      Hitachi HD44780 driver

      [hd44780]

      Select what type of connection. See documentation for availabe types.

      ConnectionType=winamp

      I/O address of the LPT port. Usual values are: 0x278, 0x378 and 0x3BC.

      For I2C connections this sets the slave address (usually 0x20).

      Port=0xbc00

      Device of the serial, I2C, or SPI interface [default: /dev/lcd]

      Device=/dev/parport_pc

      Bitrate of the serial port (0 for interface default)

      Speed=0

      If you have a keypad connected.

      You may also need to configure the keypad layout further on in this
      file.

      Keypad=no

      Set the initial contrast (bwctusb, lcd2usb, and usb4all)

      [default: 800; legal: 0 - 1000]

      Contrast=0

      Set brightness of the backlight (lcd2usb and usb4all):

      Brightness is the brightness while the backlight is set to 'on'.

      [default: 800; legal: 0 - 1000]

      Brightness=1000

      I've tried many variations of the above settings

      Any help would be much appreciated. Thnx -Greg

      On 2/21/26 18:59, Gregory McDonald wrote:

      ------------------------------------------------------------------------

/[support-requests:#8]
<https://sourceforge.net/p/lcdproc/support-requests/8/>
https://sourceforge.net/p/lcdproc/support-requests/8/ Driver Error/

/Status:/ open
/Group:/
/Created:/ Sat Feb 21, 2026 11:59 PM UTC by Gregory McDonald
/Last Updated:/ Sat Feb 21, 2026 11:59 PM UTC
/Owner:/ nobody

I have an older pc that I had lcdproc running on for years using an
old parallel port lcd. It worked up to the day the hard drive died. I
installed a new ssd drive with a fresh install of Ubuntu 24.04 LTS.
After installing lcdproc 0.5.9-7build2 and configuring I can't get
the
display to work.

After many hours of testing and debugging I found this:

/usr/lib/lcdproc/hd44780.so: error: symbol lookup error: undefined
symbol: HD44780_heartbeat (fatal)

From what I gather this is the result of some library incompatibility
issue but considering the fresh installs not sure were I went wrong.
It is the right version lcdproc for 24.04 ?

Much appreciate any guidance.

-Greg

------------------------------------------------------------------------

Sent from sourceforge.net because you indicated interest in
https://sourceforge.net/p/lcdproc/support-requests/8/

To unsubscribe from further messages, please visit
https://sourceforge.net/auth/subscriptions/

      [support-requests:#8]
      https://sourceforge.net/p/lcdproc/support-requests/8/ Driver Error

      Status: open
      Group:
      Created: Sat Feb 21, 2026 11:59 PM UTC by Gregory McDonald
      Last Updated: Sat Feb 21, 2026 11:59 PM UTC
      Owner: nobody

      I have an older pc that I had lcdproc running on for years using an
      old parallel port lcd. It worked up to the day the hard drive died. I
      installed a new ssd drive with a fresh install of Ubuntu 24.04 LTS.
      After installing lcdproc 0.5.9-7build2 and configuring I can't get the
      display to work.

      After many hours of testing and debugging I found this:

      /usr/lib/lcdproc/hd44780.so: error: symbol lookup error: undefined
      symbol: HD44780_heartbeat (fatal)

      From what I gather this is the result of some library incompatibility
      issue but considering the fresh installs not sure were I went wrong.
      It is the right version lcdproc for 24.04 ?

      Much appreciate any guidance.

      -Greg

      Sent from sourceforge.net because you indicated interest in
      https://sourceforge.net/p/lcdproc/support-requests/8/

      To unsubscribe from further messages, please visit
      https://sourceforge.net/auth/subscriptions/

       

      Related

      Support Requests: #8

      alternate

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