CentOS - Aug 2017 - What RH-like on a Dell XPS 15 (9590)?

Hello Andy,


On Fri, 04 Aug 2017 14:55:33 +0200 Andreas Benzler <andreas at
benzlerweb.de> wrote:
> If you wanne use the opensource version from nvidia can test
> my private driver stack
> 
> [cms4all-kernel]
> name=cms4all-kernel
> baseurl=http://centos.cms4all.org/repo/7/kernel/
> #baseurl=file:///srv/repo/centos/7/kernel
> gpgcheck=0
> enabled=1
> 
> Same as ml + some AMD flags and
> 
> [cms4all-drivers]
> name=cms4all-drivers
> baseurl=http://centos.cms4all.org/repo/7/drivers/
> #baseurl=file:///srv/repo/centos/7/drivers
> gpgcheck=0
> enabled=1
> 
> newer linux drivers from libdrm and x11. Optional
> 
> [cms4all-mesa]
> name=cms4all-mesa
> baseurl=http://centos.cms4all.org/repo/7/mesa/
> #baseurl=file:///srv/repo/centos/7/mesa
> gpgcheck=0
> enabled=1
I thought it was an Intel-inside thing ;-), but obviously no, or not
only:

00:02.0 VGA compatible controller: Intel Corporation Device 591b (rev 04)
(prog-if 00 [VGA controller])
        Subsystem: Dell Device 07be
        Flags: bus master, fast devsel, latency 0, IRQ 131
        Memory at eb000000 (64-bit, non-prefetchable) [size=16M]
        Memory at 80000000 (64-bit, prefetchable) [size=256M]
        I/O ports at f000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [40] Vendor Specific Information: Len=0c <?>
        Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
        Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Power Management version 2
        Capabilities: [100] Process Address Space ID (PASID)
        Capabilities: [200] Address Translation Service (ATS)
        Capabilities: [300] Page Request Interface (PRI)
        Kernel driver in use: i915
        Kernel modules: i915

01:00.0 3D controller: NVIDIA Corporation Device 1c8d (rev a1)
        Subsystem: Dell Device 07be
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at ec000000 (32-bit, non-prefetchable) [size=16M]
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at d0000000 (64-bit, prefetchable) [size=32M]
        I/O ports at e000 [size=128]
        Expansion ROM at ed000000 [disabled] [size=512K]
        Capabilities: [60] Power Management version 3
        Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [78] Express Endpoint, MSI 00
        Capabilities: [100] Virtual Channel
        Capabilities: [250] Latency Tolerance Reporting
        Capabilities: [258] L1 PM Substates
        Capabilities: [128] Power Budgeting <?>
        Capabilities: [420] Advanced Error Reporting
        Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024
<?>
        Capabilities: [900] #19
        Kernel modules: nouveau

I must admit that this is new to me! I'm not familiar w/ laptops w/ 2
devices like that. Now I understand why under Windows, Dell has
installed both Intel and NVidia software.
Could anyone explain why such hardware configuration?


I'll try disabling nouveau as soon as I can and let you know, but also
try the opensource version from nvidia. Thanks for both suggestions!


Regards,

-- 
wwp
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> I must admit that this is new to me! I'm not familiar w/ laptops w/ 2
devices like that. Now I
> understand why under Windows, Dell has installed both Intel and NVidia
software.
> Could anyone explain why such hardware configuration?
The Intel HD GPU is actually integrated on the CPU die; the discrete
graphics adapter usually has higher performance for graphics-intensive
applications. 

In windows, you should be able to choose which graphics adapter an
application uses by right-clicking its shortcut and choosing the "Run with
graphics processor" option from the context menu (the default can also be
set in the NVIDIA Control Panel, with NVIDIA adapters). So you can have the
integrated GPU handling mostly static displays and using less battery, while
the dedicated GPU kicks in for AutoCAD, video editing, gaming, et cetera. 

On desktop PCs, if the display/s is/are connected to the discrete GPU's
output port/s then the discrete GPU is used for everything.

I don't know how to tell which graphics adapter is being used by a
particular app in CentOS... the only benchmarking suite I've heard of for
CentOS is Phoronix (look in EPEL), which should have the GLMark2 benchmark
to test the OpenGL renderers. I'm not aware of any linux flavor that
supports Direct3D.

On Fri, 4 Aug 2017, Darr247 wrote:
> I don't know how to tell which graphics adapter is being used by a
> particular app in CentOS... the only benchmarking suite I've heard of
for
> CentOS is Phoronix (look in EPEL), which should have the GLMark2 benchmark
> to test the OpenGL renderers. I'm not aware of any linux flavor that
> supports Direct3D.
You want to look into Bumblebee for this hybrid nvidia setup.

https://elrepo.org/tiki/bumblebee

jh