Kernel module for lg c1 touchscreen

[Glaive]

Binary package hint: linux-image-2.6.24-19-generic

gl4iv3@GL:~$ lsb_release -rd
Description: Ubuntu 8.04.1
Release: 8.04

Effected packages:
linux-image-2.6.24-19-generic

Problem:
The modules 8250 and 8250_pnp are required for the touchscreen to work in a LG C1 tablet.
They aren't built by default, so users are required to rebuild the kernel every time an update comes up.

Solution:
in kernel config these options should be selected to be built as modules:

 Device Drivers --->
   Character devices --->
         Serial drivers --->
            <M> 8250/16550 and compatible serial support
            <M> 8250/16550 PCMCIA device support

Best regards,

[Leann Ogasawara (leannogasawara)]

Hi Glave,

I've got a few questions here for you. The 8250 and 8250_pnp modules actually correspond to the following kernel config options:

8250 => CONFIG_SERIAL_8250
8250_pnp => CONFIG_SERIAL_8250_PNP

However, in your description of navigating the kernel config menu you point to enabling CONFIG_SERIAL_8250 but then CONFIG_SERIAL_8250_CS (8250/16550 PCMCIA device support) instead of CONFIG_SERIAL_8250_PNP.

But regardless of which config option you really want, I can see that all three of these are being built for Hardy:

ogasawara@yoji:~/ubuntu-hardy/debian/config$ grep -rn "CONFIG_SERIAL_8250=" *
amd64/config:2337:CONFIG_SERIAL_8250=y
hppa/config:1104:CONFIG_SERIAL_8250=y
i386/config:1060:CONFIG_SERIAL_8250=y
ia64/config:2014:CONFIG_SERIAL_8250=y
powerpc/config:2016:CONFIG_SERIAL_8250=m
ogasawara@yoji:~/ubuntu-hardy/debian/config$ grep -rn "CONFIG_SERIAL_8250_PNP=" *
amd64/config:2345:CONFIG_SERIAL_8250_PNP=y
i386/config:1067:CONFIG_SERIAL_8250_PNP=y
ia64/config:2021:CONFIG_SERIAL_8250_PNP=y
ogasawara@yoji:~/ubuntu-hardy/debian/config$ grep -rn "CONFIG_SERIAL_8250_CS=" *
amd64/config:2339:CONFIG_SERIAL_8250_CS=m
hppa/config:1106:CONFIG_SERIAL_8250_CS=m
i386/config.386:1513:CONFIG_SERIAL_8250_CS=m
i386/config.server:1512:CONFIG_SERIAL_8250_CS=m
i386/config.generic:1511:CONFIG_SERIAL_8250_CS=m
ia64/config:2016:CONFIG_SERIAL_8250_CS=m
powerpc/config:2017:CONFIG_SERIAL_8250_CS=m

I do see that CONFIG_SERIAL_8250 and CONFIG_SERIAL_8250_PNP are built into the kernel rather than as a module. Could you maybe attach your dmesg output to verify if these modules are indeed being loaded or not? Thanks.

[Javier Jardón (jjardon)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!

[mikeanderl (michael-anderl)]

on ubuntu 9.10 (2.6.31-17-generic #54-Ubuntu SMP)
* touchscreen broken (no reaction)
* touchpad working, but the mousebuttons from the touchscreen work wired. (e.g. mark something on the gnome-terminal not possible, cause it jumps around)
* sound not working

[Jeremy Foshee (jeremyfoshee)]

Hi Glaive,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/releases/lucid . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 268430

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]