search for: fbiopan_display

Check fb_pan_display in drivers/video/fbdev/core/fbmem.c for the argument validation of the FBIOPAN_DISPLAY ioctl. CONFIG_FB_NVIDIA is a dedicated fbdev driver, not compatible with nouveau (it takes over the relevant PCI device). It also won't support your Pascal GPU, I believe -- I think it MIGHT support the Tesla generation (i.e. G80..GT21x) but definitely not anything newer. Most likely it suppor...

Oops, the FBIOPAN_DISPLAY ioctl error was a stupid mistake on mistake on my part.? Thanks for the info on where the validation code was.? Comparing against that made it easy to find the mistake.? It's working now, well...where I have been able to get over-allocation working!? Thanks for the help.? If I can't get...

...ed on my main workstation.? My laptop running Intel graphics wasn't affected by the change in kernel cmdline.? My workstation is a custom build from a few years ago with a GTX 1060 6GB, running Gentoo(Kernel version: 5.4) machine, and my laptop running Manjaro.? I also can not get the IOCTL FBIOPAN_DISPLAY to work.? It is now giving me an invalid argument error.? I have set vinfo.xoffset and vinfo.yoffset to 0 earlier in my program to try to eliminate them as variables. Other factors that may be at play: -I am trying to run this from an alternate TTY.? I have a graphical environment on TTY7 wit...

Does NOUVEAU support mmaping a double-sized Framebuffer? When attempting to run, where fd refers to "/dev/fb0": mmap(ptr, screensize * 2, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); I get back an invalid argument error. This doesn't happen if I only request a single screensize. Is this a limitation of the driver? -------------- next part -------------- An HTML attachment was

Are you setting the overallocation to 200? On Sun, Jul 5, 2020 at 3:41 AM Michael T. Kloos <michael at michaelkloos.com> wrote: > > Does NOUVEAU support mmaping a double-sized Framebuffer? > When attempting to run, where fd refers to "/dev/fb0": > > mmap(ptr, screensize * 2, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); > > I get back an invalid argument error.

Try booting with drm_kms_helper.drm_fbdev_overalloc=200 and see if it works with that. (There's also CONFIG_DRM_FBDEV_OVERALLOC which sets the default.) Cheers, -ilia On Sun, Jul 5, 2020 at 3:41 PM <michael at michaelkloos.com> wrote: > > I am not familiar with that setting, but I have really struggled to find documentation on dealing with the framebuffer. Referring to this

<div dir='auto'>I am not familiar with that setting, but I have really struggled to find documentation on dealing with the framebuffer. Referring to this guide, "http://betteros.org/tut/graphics1.php#doublebuffer", I attempted to set the mmap allocation size to double, but it caused the mmap to fail. I no longer believe that it is a driver issue, though, because I just