Re: [gentoo-user] [SOLVED] eselect-opengl Blockage (with a capital "B") problem

[Victor Ivanov]

When the lbglvnd flag was introduced I remember I solved this issue by:

    # emerge --unmerge eselect-opengl
    # emerge -1qv mesa

After that, a simple update of @world rebuilt everything else on its own.

Personally, I had been waiting for libglvnd support for _a long time_.
This - and I mean GLVND in general - is something that should have come
to Linux many years ago, along with NVIDIAs PRIME render offloading.

10y ago I used to have an Optimus laptop with an Nvidia GPU and it was
an absolute hell to get it running, I remember writing tonnes of scripts
using VirtualGL and a dummy X server running on the Nvidia GPU. This was
before bumblebee.

Today, I still need this with an external GPU.

But now it takes 1 environment variable to offload to the other GPU!
GLVND literally made my Linux work experience a million times better.
I'm extatic.

- V

On 20/05/2020 07:07, Dale wrote:
> J. Roeleveld wrote:
>> On 20 May 2020 05:44:58 CEST, Walter Dnes <waltdnes@××××××××.org> wrote:
>>> On Tue, May 19, 2020 at 03:14:03PM +0200, J. Roeleveld wrote
>>>>>> On Mon, May 18, 2020 at 01:53:19PM -0400, Walter Dnes wrote:
>>>>>  Thank you very much.  I've got the update (156 packages) running
>>> now.
>>>>> I had set "-libglvnd" in make.conf on my main machine, but only
>>> against
>>>>> xorg-server on my secondary machine.  Setting "-libglvnd" in
>>> make.conf
>>>>> solves the problem.
>>>> Only for now.
>>>> "Libglvnd" is scheduled to be removed as a USE flag.  I would
>>>> definitely suggest to switch to having that one on before it becomes
>>>> mandatory.
>>>>
>>>> It has a lot of benefits over the eselect hack to be able to have
>>>> multiple opengl implementations running.
>>>  The reason I had originally turned it off was because when it first
>>> showed up as a flag, I checked Google to find out what it was.  Almost
>>> every hit on webforums was like...
>>>
>>> Person 1 - Help; my "update world" dies
>>> Person 2 - Turn off "libglvnd" in make.conf
>>> Person 1 - Thank you; my update works fine now
>>>
>>>  Add me to the list.  If this is to be a new default config setup, I'd
>>> appreciate a news item about it, like the python 3.6 to 3.7 switchover.
>> I actually had to enable this on my new laptop before it became stable to get the Nvidia chip and my external displays working.
>> I am actually happy with this as I don't have to keep changing the opengl setting anymore when I need 3D performance.
>>
>> --
>> Joost
>
>
> Reading this thread, I checked and I to have this USE flag turned
> off/disabled/whatever.  I removed it from make.conf and commented out
> everything else I found in /etc/portage and am checking to see what all
> had to be rebuilt.  I figure I may as well change now while I have a
> otherwise stable system, except for the sddm-helper chewing memory
> problem, and get ahead of the curve.  ;-)  Using that grep -r trick
> comes in handy.  Learned that from this list too. 
>
> It's odd how following a thread that may not even affect you ends up
> doing so.  :/
>
> Just in case, this is what emerge spit out on my screen. 
>
>
> Calculating dependencies... done!
> [ebuild   R    ] sys-libs/libblockdev-2.23-r1::gentoo  USE="cryptsetup
> lvm tools -bcache -device-mapper -dmraid -escrow -gtk-doc -introspection
> -kbd -test -vdo" PYTHON_SINGLE_TARGET="python3_7 -python3_6
> (-python3_8)" 0 KiB
> [ebuild   R    ] media-libs/libdvdnav-6.0.0::gentoo  USE="-static-libs"
> ABI_X86="(64) -32 (-x32)" 0 KiB
> [ebuild  N     ] media-libs/libglvnd-1.3.1::gentoo  USE="X -test"
> ABI_X86="32 (64) (-x32)" 698 KiB
> [ebuild   R   ~] media-libs/mesa-20.0.4-r1::gentoo  USE="X classic dri3
> egl gallium gbm gles2 libglvnd* llvm wayland zstd -d3d9 -debug -gles1
> -lm-sensors -opencl -osmesa (-selinux) -test -unwind -vaapi -valgrind
> -vdpau -vulkan -vulkan-overlay -xa -xvmc" ABI_X86="32 (64) (-x32)"
> VIDEO_CARDS="(-freedreno) -i915 -i965 -intel -iris (-lima) -nouveau
> (-panfrost) -r100 -r200 -r300 -r600 -radeon -radeonsi (-vc4) -virgl
> (-vivante) -vmware" 0 KiB
> [blocks b      ] media-libs/mesa[-libglvnd(-)]
> ("media-libs/mesa[-libglvnd(-)]" is blocking media-libs/libglvnd-1.3.1)
> [ebuild   R    ] sys-libs/libcap-2.26-r2::gentoo  USE="pam (split-usr)
> -static-libs" ABI_X86="32 (64) (-x32)" 0 KiB
> [ebuild   R    ] x11-drivers/nvidia-drivers-440.82:0/440::gentoo  USE="X
> acpi driver gtk3 kms libglvnd* multilib tools -compat -static-libs -uvm
> -wayland" ABI_X86="32 (64) (-x32)" 0 KiB
> [ebuild   R    ] x11-base/xorg-server-1.20.7:0/1.20.7::gentoo 
> USE="elogind ipv6 libglvnd* suid udev xorg -debug -dmx -doc -kdrive
> -libressl -minimal (-selinux) -static-libs -systemd -unwind -wayland
> -xcsecurity -xephyr -xnest -xvfb" 0 KiB
> [uninstall     ] app-eselect/eselect-opengl-1.3.1-r4::gentoo
> [blocks b      ] app-eselect/eselect-opengl
> ("app-eselect/eselect-opengl" is blocking
> x11-drivers/nvidia-drivers-440.82, x11-base/xorg-server-1.20.7,
> media-libs/mesa-20.0.4-r1)
>
>
>
> Now let us pray to the portage gods for a happy outcome.  o_O
>
> Dale
>
> :-)  :-) 
>
> P. S. Between this and finding that weird The Black Bird movie from
> 1975, I'm having a good day.  ROFL