Problem in loading Nouveau driver

Problem in loading Nouveau driver

[Ali Aminian]

Hello
How should i enable Nouveau driver in a custom kernel. Here is how i
compiled my kernel:
1_make localmodconfig
2_make menuconfig and then went to: device drivers -->  Graphics
support --> Nouveau Support
3_make
4_make modules_install
5_make install

and after booting the kernel i tried loading Nouveau by following commands:

1_insmod drm.ko
2_insmod drm_kms_helper.ko
3_insmod ttm.ko
4_insmod nouveau.ko

but in the last step it gives me Unknown symbol in module

here is the result of "dmesg | tail" after i tried insmod nouvea.ko:

drm: module verification failed: signature and/or  required key
missing - tainting kernel
[  212.330197] [drm] Initialized drm 1.1.0 20060810
[  255.336591] nouveau: Unknown symbol i2c_bit_add_bus (err 0)
[  255.336610] nouveau: Unknown symbol mxm_wmi_call_mxds (err 0)
[  255.336625] nouveau: Unknown symbol mxm_wmi_supported (err 0)
[  255.336644] nouveau: Unknown symbol i2c_bit_algo (err 0)
[  255.336719] nouveau: Unknown symbol wmi_evaluate_method (err 0)
[  255.336777] nouveau: Unknown symbol wmi_has_guid (err 0)
[  255.336904] nouveau: Unknown symbol mxm_wmi_call_mxmx (err 0)

I don't know in what step i did wrong.

thank you.

Problem in loading Nouveau driver

[Paul Bolle]

On Sat, 2014-12-20 at 09:00 +0330, Ali Aminian wrote:
> and after booting the kernel i tried loading Nouveau by following commands:
> 
> 1_insmod drm.ko
> 2_insmod drm_kms_helper.ko
> 3_insmod ttm.ko
> 4_insmod nouveau.ko
> 
> but in the last step it gives me Unknown symbol in module

Why do it by hand when you can modprobe? I don't use nouveau myself, but
om my machine (running v3.18.1) modprobe tells me:
        $ modprobe --show-depends nouveau
        insmod [...]/drivers/gpu/drm/drm.ko 
        insmod [...]/drivers/gpu/drm/drm_kms_helper.ko 
        insmod [...]/drivers/gpu/drm/ttm/ttm.ko 
        insmod [...]/drivers/i2c/algos/i2c-algo-bit.ko 
        insmod [...]/drivers/acpi/video.ko 
        insmod [...]/drivers/platform/x86/wmi.ko 
        insmod [...]/drivers/platform/x86/mxm-wmi.ko 
        insmod [...]/drivers/gpu/drm/nouveau/nouveau.ko

> here is the result of "dmesg | tail" after i tried insmod nouvea.ko:
> 
> drm: module verification failed: signature and/or  required key
> missing - tainting kernel
> [  212.330197] [drm] Initialized drm 1.1.0 20060810
> [  255.336591] nouveau: Unknown symbol i2c_bit_add_bus (err 0)

$ git grep -nw i2c_bit_add_bus | grep EXPORT
drivers/i2c/algos/i2c-algo-bit.c:655:EXPORT_SYMBOL(i2c_bit_add_bus);

Ie, i2c-algo-bit.ko as seen above.

> [  255.336610] nouveau: Unknown symbol mxm_wmi_call_mxds (err 0)

$ git grep -nw mxm_wmi_call_mxds | grep EXPORT
drivers/platform/x86/mxm-wmi.c:66:EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);

Ie, mxm-wmi.ko as seen above.

> [  255.336625] nouveau: Unknown symbol mxm_wmi_supported (err 0)

Etc.

> [  255.336644] nouveau: Unknown symbol i2c_bit_algo (err 0)
> [  255.336719] nouveau: Unknown symbol wmi_evaluate_method (err 0)
> [  255.336777] nouveau: Unknown symbol wmi_has_guid (err 0)
> [  255.336904] nouveau: Unknown symbol mxm_wmi_call_mxmx (err 0)
> 
> I don't know in what step i did wrong.

Hope this helps,


Paul Bolle

Problem in loading Nouveau driver

[Ali Aminian]

Hello
when i use modprobe it gives me this:
modprobe: ERROR: ../libkmod/libkmod-module.c:809
kmod_module_insert_module() could not find module by name='off'
modprobe: ERROR: could not insert 'off': Function not implemented
modprobe: ERROR: ../libkmod/libkmod-module.c:809
kmod_module_insert_module() could not find module by name='off'

I guess at least i should once load the module manually and then try
using modprobe.

Problem in loading Nouveau driver

[Ali Aminian]

Hello Paul Bolle
it worked.
I just insmod modules you listed and it worked.
thank you

Problem in loading Nouveau driver

[Paul Bolle]

On Sat, 2014-12-20 at 20:47 +0330, Ali Aminian wrote:
> it worked.

Good.

> I just insmod modules you listed and it worked.

It's odd that modprobe failed here. Perhaps you could look into that a
bit more. If you can reproduce this failure you might want to report it
to the maintainers of modprobe (either at your distribution or
upstream).

Thanks,


Paul Bolle

Problem in loading Nouveau driver

[Valdis.Kletnieks at vt.edu]

On Sat, 20 Dec 2014 20:57:40 +0100, Paul Bolle said:
> On Sat, 2014-12-20 at 20:47 +0330, Ali Aminian wrote:
> > it worked.
>
> Good.
>
> > I just insmod modules you listed and it worked.
>
> It's odd that modprobe failed here.

Not really.

Most likely cause - failure to run depmod after putting new modules in
/lib/modules.
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