<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [nouveau] GeForce GTX 1660 Ti (mobile) not supported (NV168/TU116)" href="https://bugs.freedesktop.org/show_bug.cgi?id=110830#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [nouveau] GeForce GTX 1660 Ti (mobile) not supported (NV168/TU116)" href="https://bugs.freedesktop.org/show_bug.cgi?id=110830">bug 110830</a> from <a class="email" href="mailto:mszpak@wp.pl" title="Marcin Zajaczkowski <mszpak@wp.pl>"> Marcin Zajaczkowski</a> <pre>(In reply to Ilia Mirkin from <a href="show_bug.cgi?id=110830#c6">comment #6</a>) > (In reply to Marcin Zajaczkowski from <a href="show_bug.cgi?id=110830#c4">comment #4</a>) > > Of course it didn't make sense to turn it on, as it was already turned on > > (DynPwr) in my case :) ). I can switch it off with vgaswitcheroo (or at > > least to be reported as DynOff - I will check it later with powertop) when > > no external output is connected. And what I missed in my previous comment - > > the external monitor works out-of-box, which is nice progress. > > vgaswitcheroo explicit control is for hard muxes. These were popular 2005 to > 2010 or so. You just have 2 GPUs. vgaswitcheroo reports whether they're on > or off, but that control is performed dynamically by the driver based on > usage. You are right. Afew seconds after an external monitor is disconnected the discrete card becomes DynOff. I have a hard mux in my (quite) old Asus. I can use only the Intel card to save energy and the Nvidia card is used only occasionally for CUDA and gaming. I wonder why in multiple laptops nowadays the outputs are wired to one card limiting the aforementioned use case? What are the benefits of that (assuming the modern Intel can handle 3 displays enabled at the same time)? > > There are also no reported providers in xrandr: > > > $ xrandr --listproviders > > > Providers: number: 0 > > This is incredibly odd -- there must always be at least 1! Are you running > Xwayland or something? If so, the displays would be controlled through your > wayland compositor. You can check that kms is working: Yes, it was Wayland. With Xorg I see two providers: > Providers: number : 2 > Provider 0: id: 0x6b cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 3 associated providers: 1 name:modesetting > Provider 1: id: 0x45 cap: 0x2, Sink Output crtcs: 4 outputs: 2 associated providers: 1 name:modesetting Hmm, why there are 3 and 4 outputs associated to them? Is it possible that DP output is accessible with the Intel card only (I don't have a connector right here to test it organoleptically)? > > grep . /sys/class/drm/card*-*/status > > You should see some card0-* and card1-* entries. Yes, I see different outputs. > /sys/class/drm/card0-DP-1/status:disconnected > /sys/class/drm/card0-eDP-1/status:connected > /sys/class/drm/card0-HDMI-A-1/status:disconnected > /sys/class/drm/card1-DP-2/status:disconnected > /sys/class/drm/card1-HDMI-A-2/status:disconnected</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>