X graphics skewed/broken - Xorg or Nvidia? nvidia_modeset?

dman777 · Veteran Joined: 10 Jan 2007 Posts: 1004

On a new install, I am having issues with my X session. As seen in the picture, my Xterm window is smushed, skewed, and there are some video artifacts.

In trouble shooting, I am baffled and not sure if its Xorg or Nvidia drivers that are the issue. I don't see Errors in the Xlog. However, after I exit the X session I do see `modprobe: ERROR: could not insert 'nvidia_modeset': Operation not permitted` which is confusing, since I do not have nvidia framebuffer enabled in the kernel.

Ay ideas what is causing this?

Using Xorg 1.17.4
Nvidia 361.28

Photo:
photos.google.com/share/AF1QipOw (etc...)

X output after X session ends:

Maxxx · Guru Joined: 12 Jan 2016 Posts: 595 Location: Italia

Do you have set "nvidia" to /etc/modprobe.d/blacklist.conf file?

Roman_Gruber · Posted: Tue Jul 12, 2016 9:54 am Post subject:

Whats up with those ACPI errors?

Any reason why you use an antique kernel?

In my expierience nvidia-drivers binary only works with a certain set of xorg-server and kernels combinations.

a) update your kernel to e.g. 4.6.x
b) create an xorg-config with reasonable values for monitor / gpu

(On my hardware for example the nvidia-driver or lets rephrase it my system (linux) is unable to determine the correct values for my external screen.)

What is the content and please list each file with cat of this directory?

krinn · Watchman Joined: 02 May 2003 Posts: 7470

You're not asking any resolution from what i see, if you want some auto pickup resolution, you have to set some nvidia-autoselect mode.
It goes with a 640x480, a resolution your monitor may not really like to run in.

So i would say, try looking in your xorg.conf and fix it, because "NULL" is a valid resolution keyword for nvidia, and it really mean: do not use that monitor ; ie: 1680x1050, NULL mean set monitor 1 to 1680x1050 and disable monitor 2.

tw04l124: nvidia acpi are not errors, user can fix the messages by running acpid but it's just info anyway.
I notice you always push anyone to update for no reason except that update mean good for you. 3.18 kernel is not antique, 3.18 kernel is an LTS kernel.

dman777 · Veteran Joined: 10 Jan 2007 Posts: 1004

I think the resolution is the root issue. I tried to manually force the resolution that works from my other gentoo rootfs, and the resolution will not take.

Any ideas why 'Modes "1920x1080"' will not be forced and used?

krinn · Watchman Joined: 02 May 2003 Posts: 7470

It's MetaModes not metamodes

and if you are not sure what interface the monitor is connect to, you should drop it (DVI-D-0), been specific is good, been specific and mistaking the aiming interface is not.

here's my current xorg metamodes entry.
Option "MetaModes" "1680x1050_120,1680x1050_120; NULL, 1680x1050_120"

dman777 · Veteran Joined: 10 Jan 2007 Posts: 1004

Thanks....still can not get it to work though. This is the same PC where my old rootfs has Xorg working(with older nvidia and xorg drivers), so the resolution should be working. But instead it's still using the 640 resolution:

NOTE: I also tried '"MetaModes" "1920x1080_24" and "1920x1080_120" to no success

krinn · Watchman Joined: 02 May 2003 Posts: 7470

thanks but xorg.log would help better now that your conf is fixed

note: the 1920x1080_120 mean some define user mode, it must exist for you to use it, so your chance of success where down 0 there.

dman777 · Veteran Joined: 10 Jan 2007 Posts: 1004

Sure, sorry. Here it is. I don't know it saids MetaModes is null. Here is a pic showing the resolution is correct in my other rootfs on the same PC:
http://i.imgur.com/80XbbxJ.jpg

Would this be a bug/issue with Nvidia or Xorg for not recognizing the MetaMode as it does on my other rootfs?

krinn · Watchman Joined: 02 May 2003 Posts: 7470

dman777 · Veteran Joined: 10 Jan 2007 Posts: 1004

Ya, this is the same PC as my other old gentoo root filesystem, where X works. I have two seperate harddrives where I am switching back and forth for root file systems(old gentoo system and the new one I am building). So all hardware is the same. If I filed a bug would it be Nvidia or X?

Here is what my Xorg looks like on my old working root fs(where X works with no issues) on the same hardware:

krinn · Watchman Joined: 02 May 2003 Posts: 7470

I don't think you should "already" report, but if you do, must be against nvidia drivers as it is them that fail to get your display.

You should recheck nvidia readme and look at features that must be present in kernel, and features that disturb them and that should be removed.

dman777 · Veteran Joined: 10 Jan 2007 Posts: 1004

Ok, so I have some exciting news after much pain without pleasure.

With the Nvidia drivers 361.28 : 0 the uvesa resolution from grub `video=uvesafb:mtrr:3,ywrap,1920x1080-32 ` was skewing the resolution. I removed that from grub, and then that fixed the resolution issue. However, the graphics were stilled hosed with video artifacts everywhere filling my whole monitor viewport/screen.

I kept downgrading Nvidia drivers increments of stable releases. I got to x11-drivers/nvidia-drivers-355.11-r2 and my X session worked with no issues. In addition, it worked with 'video=uvesafb:mtrr:3,ywrap,1920x1080-32' from grub.

Should I file a bug with Gentoo bugzilla or is there a nvidia repo I need to file with?
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Roman_Gruber · Posted: Sat Jul 23, 2016 12:36 pm Post subject:

Bugs belong to nvidia.

I reported a few nvidia bugs. No reply after inital answer from them.

I never used framebuffer with custom resolution on my nvidia boxes. You may read their handbook regarding setting up things and whats supported. Its very well written on the stuff I have read recently about setting up the X-server with additional screens

Nvidia also has a support forum, you may ask there also first.

Honestly I am not sure if its a bug. You should check their handbook from nvidia if uvesa if a supported feature and how they propose to set up things