James Lehman
2015-Oct-08 20:21 UTC
[Nouveau] 4K ~ 3840x2160 resolution and frame buffer support
Hello. I hope this is in the right place. I just built a new machine and installed Xubuntu and I'm still figuring things out. I'm interested in working with The Linux Frame Buffer. Many years ago, I started a project called ezfb and I would like to continue developing it on a machine capable of 4K. Is it possible to have a frame buffer that does 3840x2160 ? With nouveau installed as my video driver, I can get to a frame buffer console of 1920x1080, but I am limited to that resolution in Xfce as well. With a proprietary nVidia driver installed I can get to 4K in Xfce, but my frame buffer is 640x480, 4 bit color. When I try fbset to change anything, it doesn't work. I have not even bothered to try my code so see of any of it can actually work in the frame buffers I get. Still scratching my head.... Thank you for your time. James.
Ilia Mirkin
2015-Oct-08 20:44 UTC
[Nouveau] 4K ~ 3840x2160 resolution and frame buffer support
If you only get 1920x1080 in X, chances are that nouveau doesn't believe it can do 3840x2160 for one reason or another. There are a number of reasons why this might be the case, please provide dmesg, xorg log, and information on how the monitor is connected (including any A->B type adapters). -ilia On Thu, Oct 8, 2015 at 4:21 PM, James Lehman <james at akrobiz.com> wrote:> Hello. I hope this is in the right place. > > I just built a new machine and installed Xubuntu and I'm still figuring > things out. > > I'm interested in working with The Linux Frame Buffer. > > Many years ago, I started a project called ezfb and I would like to continue > developing it on a machine capable of 4K. > > Is it possible to have a frame buffer that does 3840x2160 ? > > With nouveau installed as my video driver, I can get to a frame buffer > console of 1920x1080, but I am limited to that resolution in Xfce as well. > > With a proprietary nVidia driver installed I can get to 4K in Xfce, but my > frame buffer is 640x480, 4 bit color. When I try fbset to change anything, > it doesn't work. > > I have not even bothered to try my code so see of any of it can actually > work in the frame buffers I get. > > Still scratching my head.... > > Thank you for your time. > > James. > > > _______________________________________________ > Nouveau mailing list > Nouveau at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/nouveau
James Lehman
2015-Oct-08 21:18 UTC
[Nouveau] 4K ~ 3840x2160 resolution and frame buffer support
Thank you for your quick reply. I have a Gigabyte GT-730 2GB card hooked directly via a high quality HDMI cable to a 65 inch Samsung curved screen LCD 4K monitor. I'm not sure what I am looking for in dmesg and xorg log. Please advise. I have built the 3.19.8 kernel and enabled frame buffer support. I can see 7 out of the 8 penguins when I boot. My ultimate goal is to be able to boot to a 3840x2160 32 bit (frame buffer) console. Then go into Xfce, or not, as needed. I like to write frame buffer apps that run in the console. Thank you. On 10/08/2015 04:44 PM, Ilia Mirkin wrote:> If you only get 1920x1080 in X, chances are that nouveau doesn't > believe it can do 3840x2160 for one reason or another. There are a > number of reasons why this might be the case, please provide dmesg, > xorg log, and information on how the monitor is connected (including > any A->B type adapters). > > -ilia > > On Thu, Oct 8, 2015 at 4:21 PM, James Lehman <james at akrobiz.com> wrote: >> Hello. I hope this is in the right place. >> >> I just built a new machine and installed Xubuntu and I'm still figuring >> things out. >> >> I'm interested in working with The Linux Frame Buffer. >> >> Many years ago, I started a project called ezfb and I would like to continue >> developing it on a machine capable of 4K. >> >> Is it possible to have a frame buffer that does 3840x2160 ? >> >> With nouveau installed as my video driver, I can get to a frame buffer >> console of 1920x1080, but I am limited to that resolution in Xfce as well. >> >> With a proprietary nVidia driver installed I can get to 4K in Xfce, but my >> frame buffer is 640x480, 4 bit color. When I try fbset to change anything, >> it doesn't work. >> >> I have not even bothered to try my code so see of any of it can actually >> work in the frame buffers I get. >> >> Still scratching my head.... >> >> Thank you for your time. >> >> James. >> >> >> _______________________________________________ >> Nouveau mailing list >> Nouveau at lists.freedesktop.org >> http://lists.freedesktop.org/mailman/listinfo/nouveau