[Bug 1649060] Re: amdgpu does not find any output when using dedicated (AMD) card
Just for information of anyone landing here, I indicate the results of my tests, I have tested the procedure with glxgears and the game Minecraft, both reporting similar results. If I remove all custom xorg configuration, just leaving defaults Ubuntu settings, the DRI_PRIME procedure appears to work fine if I use metacity as desktop, but if I use dash (Ubuntu default nowadays), I sometimes got black windows, with the image randomly appearing or disappearing when resizing the window. Googling about, I have found a reference (sorry, I do not remember where and I have not written it down) saying that DRI-3 should be used for the Intel driver. This is accomplished by creating a file in the /etc/X11/xorg.conf.d folder (create the folder if it does not exist), I have named it 20-dri3.conf, with the following contents: Section "Device" Identifier "intel-device" Driver "intel" Option "DRI" "3" EndSection According to the reference, the BusID field should not be indicated. Doing this, it seems that DRI_PRIME=1 works fine with both desktops, anyway if I read the Xorg.0.log file, all references to AMDGPU have disappeared (there are lot of them when using default xorg configuration) which seems to indicate that xorg module admgpu is not used (the kernel module is loaded anyway). Nevertheless, both glxinfo and Minecraft report that the AMD card is being used (and Minecraft performs better than without DRI_PRIME=1). Thanks for your interest. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649060 Title: amdgpu does not find any output when using dedicated (AMD) card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1649060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1649060] Re: amdgpu does not find any output when using dedicated (AMD) card
there's no point to use it for the desktop, because it'll just eat your battery -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649060 Title: amdgpu does not find any output when using dedicated (AMD) card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1649060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1649060] Re: amdgpu does not find any output when using dedicated (AMD) card
Thanks a lot for your reply. Now I have to find out what "render offload target" means. I have tried "DRI_PRIME=1 glxgears" which I think is a good test for card performance and it reports 1700 FPS instead of the 60 FPS reported without the DRI_PRIME=1 so I assume that the dedicated card is indeed used. I will try with a couple of games and maybe with compiz (is the procedure useful for the whole desktop??). Nevertheless, it does not seem a very user-friendly way to make the dedicated card active and probably out of the reach of many users, which renders this card virtually non-existent for non experienced users or for those without the spirit of spending many hours googling to find it out. At least, I hope that, even if closed for invalid, my report and your answer may help other people facing the same problem and that may land in this dialogue by searching the internet. Best wishes. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649060 Title: amdgpu does not find any output when using dedicated (AMD) card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1649060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1649060] Re: amdgpu does not find any output when using dedicated (AMD) card
Yur amdgpu is a render offload target, and does not have outputs as you said. In order to use it for offloading, you need to run an app with 'DRI_PRIME=1 app'. There is no better support for that in the desktop environment to control it, so it needs to be done manually like that.. ** Changed in: xserver-xorg-video-amdgpu (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649060 Title: amdgpu does not find any output when using dedicated (AMD) card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1649060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
