Nvidia issue & cannot downgrade the kernel

[elkizana]

I read the suggestion of downgrading the kernel to a version prior than 5.8 to not having problems with the graphic card driver, but I haven't been successful doing so. I've tried multiple old kernel version but had system won't boot.

My OS : Ubuntu 21.10
My PCI : Skystar 2 express hd (SAA7160)

What should I do ?

[crazycat69]

resolved in latest media_build (branch extra)
use install.sh for compiling/installation

Tested with 5.8, 5.10, 5.11 kernel (with proprietary NVidia GPU driver).
Ubuntu 21.10 also must work.

[elkizana]

I executed the script, got "V4L drivers installation done" then reboot but it didn't install the driver.
Is there some thing I missed ?

[crazycat69]

see kernel log - dmesg

[elkizana]

Important: I installed my running kernel from here : https://kernel.ubuntu.com/~kernel-ppa/mainline
And I have this warning when running the script : WARNING: You do not have the full kernel sources installed.

[crazycat69]

look like drivers not installed.
you have build log ?

[elkizana]

i@i-MS-7816:~/media_build$ sudo ./install.sh
make -C /home/idoom/media_build/v4l stagingconfig
make[1]: Entering directory '/home/idoom/media_build/v4l'
No version yet, using 5.13.0-20-generic
make[2]: Entering directory '/home/idoom/media_build/linux'
Applying patches for kernel 5.13.0-20-generic
patch -s -f -N -p1 -i ../backports/api_version.patch
The text leading up to this was:

|diff --git a/drivers/media/cec/core/cec-api.c b/drivers/media/cec/core/cec-api.c
|index b6536bbad530..401ed65c834b 100644
|--- a/drivers/media/cec/core/cec-api.c
|+++ b/drivers/media/cec/core/cec-api.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
The text leading up to this was:

|diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
|index 3bae24b15eaa..7f7cc64c637c 100644
|--- a/drivers/media/mc/mc-device.c
|+++ b/drivers/media/mc/mc-device.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
The text leading up to this was:

|diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
|index 54afc9c7ee6e..4572a87acc0b 100644
|--- a/drivers/media/v4l2-core/v4l2-ioctl.c
|+++ b/drivers/media/v4l2-core/v4l2-ioctl.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
make[2]: *** [Makefile:133: apply_patches] Error 1
make[2]: Leaving directory '/home/idoom/media_build/linux'
make[1]: *** [Makefile:380: stagingconfig] Error 2
make[1]: Leaving directory '/home/idoom/media_build/v4l'
make: *** [Makefile:26: stagingconfig] Error 2
sed: can't read v4l/.config: No such file or directory
sed: can't read v4l/.config: No such file or directory
V4L drivers building...
make -C /home/idoom/media_build/v4l
make[1]: Entering directory '/home/idoom/media_build/v4l'
scripts/make_makefile.pl
Updating/Creating .config
make[2]: Entering directory '/home/idoom/media_build/linux'
make[2]: Entering directory '/home/idoom/media_build/linux'
make[3]: Entering directory '/home/idoom/media_build/linux'
Unapplying patches
make[3]: Entering directory '/home/idoom/media_build/linux'
Unapplying patches
make[3]: Leaving directory '/home/idoom/media_build/linux'
Applying patches for kernel 5.13.0-20-generic
make[3]: Leaving directory '/home/idoom/media_build/linux'
Applying patches for kernel 5.13.0-20-generic
patch -s -f -N -p1 -i ../backports/api_version.patch
patch -s -f -N -p1 -i ../backports/api_version.patch
The text leading up to this was:

|diff --git a/drivers/media/cec/core/cec-api.c b/drivers/media/cec/core/cec-api.c
|index b6536bbad530..401ed65c834b 100644
|--- a/drivers/media/cec/core/cec-api.c
|+++ b/drivers/media/cec/core/cec-api.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
The text leading up to this was:

|diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
|index 3bae24b15eaa..7f7cc64c637c 100644
|--- a/drivers/media/mc/mc-device.c
|+++ b/drivers/media/mc/mc-device.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
The text leading up to this was:

|diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
|index 54afc9c7ee6e..4572a87acc0b 100644
The text leading up to this was:
|--- a/drivers/media/v4l2-core/v4l2-ioctl.c

|+++ b/drivers/media/v4l2-core/v4l2-ioctl.c

|diff --git a/drivers/media/cec/core/cec-api.c b/drivers/media/cec/core/cec-api.c
No file to patch. Skipping patch.
|index b6536bbad530..401ed65c834b 100644
|--- a/drivers/media/cec/core/cec-api.c
|+++ b/drivers/media/cec/core/cec-api.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored1 out of 1 hunk ignored

The text leading up to this was:

|diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
|index 3bae24b15eaa..7f7cc64c637c 100644
|--- a/drivers/media/mc/mc-device.c
|+++ b/drivers/media/mc/mc-device.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
The text leading up to this was:

|diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
|index 54afc9c7ee6e..4572a87acc0b 100644
|--- a/drivers/media/v4l2-core/v4l2-ioctl.c
|+++ b/drivers/media/v4l2-core/v4l2-ioctl.c

No file to patch. Skipping patch.
make[2]: *** [Makefile:133: apply_patches] Error 1
make[2]: Leaving directory '/home/idoom/media_build/linux'
1 out of 1 hunk ignored
make[2]: *** [Makefile:133: apply_patches] Error 1
make[2]: Leaving directory '/home/idoom/media_build/linux'
Preparing to compile for kernel version 5.13.0

WARNING: You do not have the full kernel sources installed.
This does not prevent you from building the v4l-dvb tree if you have the
kernel headers, but the full kernel source may be required in order to use
make menuconfig / xconfig / qconfig.

If you are experiencing problems building the v4l-dvb tree, please try
building against a vanilla kernel before reporting a bug.

Vanilla kernels are available at http://kernel.org.
On most distros, this will compile a newly downloaded kernel:

cp /boot/config-uname -r /.config
cd
make all modules_install install

Please see your distro's web site for instructions to build a new kernel.

WARNING: This is the V4L/DVB backport tree, with experimental drivers
backported to run on legacy kernels from the development tree at:
http://git.linuxtv.org/media-tree.git.
It is generally safe to use it for testing a new driver or
feature, but its usage on production environments is risky.
Don't use it in production. You've been warned.
File not found: ../linux/drivers/media/Kconfig at ./scripts/make_kconfig.pl line 302.
Updating/Creating .config
make[2]: Entering directory '/home/idoom/media_build/linux'
make[3]: Entering directory '/home/idoom/media_build/linux'
Unapplying patches
make[3]: Leaving directory '/home/idoom/media_build/linux'
Applying patches for kernel 5.13.0-20-generic
patch -s -f -N -p1 -i ../backports/api_version.patch
The text leading up to this was:

|diff --git a/drivers/media/cec/core/cec-api.c b/drivers/media/cec/core/cec-api.c
|index b6536bbad530..401ed65c834b 100644
|--- a/drivers/media/cec/core/cec-api.c
|+++ b/drivers/media/cec/core/cec-api.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
The text leading up to this was:

|diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
|index 3bae24b15eaa..7f7cc64c637c 100644
|--- a/drivers/media/mc/mc-device.c
|+++ b/drivers/media/mc/mc-device.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
The text leading up to this was:

|diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
|index 54afc9c7ee6e..4572a87acc0b 100644
|--- a/drivers/media/v4l2-core/v4l2-ioctl.c
|+++ b/drivers/media/v4l2-core/v4l2-ioctl.c

No file to patch. Skipping patch.
1 out of 1 hunk ignored
make[2]: *** [Makefile:133: apply_patches] Error 1
make[2]: Leaving directory '/home/idoom/media_build/linux'
Preparing to compile for kernel version 5.13.0

WARNING: You do not have the full kernel sources installed.
This does not prevent you from building the v4l-dvb tree if you have the
kernel headers, but the full kernel source may be required in order to use
make menuconfig / xconfig / qconfig.

If you are experiencing problems building the v4l-dvb tree, please try
building against a vanilla kernel before reporting a bug.

Vanilla kernels are available at http://kernel.org.
On most distros, this will compile a newly downloaded kernel:

cp /boot/config-uname -r /.config
cd
make all modules_install install

Please see your distro's web site for instructions to build a new kernel.

WARNING: This is the V4L/DVB backport tree, with experimental drivers
backported to run on legacy kernels from the development tree at:
http://git.linuxtv.org/media-tree.git.
It is generally safe to use it for testing a new driver or
feature, but its usage on production environments is risky.
Don't use it in production. You've been warned.
File not found: ../linux/drivers/media/Kconfig at ./scripts/make_kconfig.pl line 302.
No kernel files. You need to run "make download untar" or "make dir DIR=<your_git_source_dir>" first!
exit 1
make[1]: *** [Makefile:6: def] Error 1
make[1]: Leaving directory '/home/idoom/media_build/v4l'
make: *** [Makefile:26: all] Error 2
V4L drivers installing...
make -C /home/idoom/media_build/v4l install
make[1]: Entering directory '/home/idoom/media_build/v4l'

Hmm... distro kernel with a non-standard place for module backports detected.
Please always prefer to use vanilla upstream kernel with V4L/DVB
I'll try to remove old/obsolete LUM files from /lib/modules/5.13.0-20-generic//updates/dkms:

Hmm... distro kernel with a non-standard place for module backports detected.
Please always prefer to use vanilla upstream kernel with V4L/DVB
I'll try to remove old/obsolete LUM files from /lib/modules/5.13.0-20-generic//updates/dkms:
Installing kernel modules under /lib/modules/5.13.0-20-generic/updates/extra/media/:
/sbin/depmod -a 5.13.0-20-generic
make -C firmware install
make[2]: Entering directory '/home/idoom/media_build/v4l/firmware'
Installing firmwares at /lib/firmware:
make[2]: Leaving directory '/home/idoom/media_build/v4l/firmware'
make[1]: Leaving directory '/home/idoom/media_build/v4l'
V4L drivers installation done
You need to reboot...

[crazycat69]

you can provide remote access for me ?

[elkizana]

I cannot

[elkizana]

I managed to make the driver work by these steps :

git clone -b extra https://github.com/tbsdtv/media_build
git clone --depth=1 https://github.com/tbsdtv/linux_media.git -b latest ./media
cd media_build
make dir DIR=../media
./install 

But still, it prevented the Nvidia driver to work properly.
Is there a way to make the nvidia driver work properly again, without installing a new kernel ?

[crazycat69]

first restore kernel module packages (first time you owerwrite media modules)

[dorinilut]

I basically have the same issue. the driver installs but then you loose for example /dev/dri, and that means no more intel gpu. crazycal69, would you be so kind as to provide what would be the proper sequence of commands to restore those kernel module packages? I tried various combinations and always ending up in a f**ked up kernel :(. Your expertise would be more than welcomed.

[elkizana]

@dorinilut I solved my problem. tbsdtv/media_build#36

[dorinilut]

@dorinilut I solved my problem. https://github.com/tbsdtv/media_build/issues/36#issuecomment-952772243

Can I please ask for some details? The link you posted is not pointing to anything. For me also the driver compiles, but whenever that happens the /dev/dri folder gets removed. and for the love of god i have not managed to find a way to recover it.

[elkizana]

@dorinilut link corrected. But it wasn't related to /dev/dri, my issue was related to the gpu driver.