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XPS 13 9370 / CentOS compat

Anyone with some Dell laptop XPS 13 9370 (2018) experience here?
Especially with that "Killer 1435 (802.11ac 2x2 und Bluetooth)" device?
Supported by the stock kernel (EL7)?

Comments

Re: XPS 13 9370 / CentOS compat

By Jim Perrin at 11/07/2018 - 10:15

I had reasonably unreliable performance with that particular
chip(sometimes wireless wouldn't wake up from sleep and I'd have to
reboot), and ended up replacing it with an intel 8265 chip. It takes
about 10 minutes to swap, and got me much better performance on my 9370.

Link below is the one I picked up, but you may be able to find it for
cheaper. Dell tells me that swapping it doesn't void the warranty, so
I'm good with it.
<a href="https://www.amazon.com/gp/product/B01MZA1AB2" title="https://www.amazon.com/gp/product/B01MZA1AB2">https://www.amazon.com/gp/product/B01MZA1AB2</a>

On 11/3/18 12:32 PM, Leon Fauster via CentOS wrote:

Re: XPS 13 9370 / CentOS compat

By Johnny Hughes v... at 11/07/2018 - 11:28

Am 07.11.2018 um 15:15 schrieb Jim Perrin < ... at centos dot org>:
Thank you for taking the time. A valuable information! The 9365 variant seems
to be shipped with a Intel8265 card. I will get in contact with DELL and try to
request it for the 9370 model ...

Re: XPS 13 9370 / CentOS compat

By Johnny Hughes v... at 11/19/2018 - 09:02

Maybe its an earlier model (9360 or 9365). For the 9370 Dell stated and different
user reports confirm it, that the XPS 13 (9370) has the WIFI module soldered on board.

Some users on dell discussion portal reported also issues with the build camera.

For now, I will stay away from the 9370 model ...

Hypervisor and access method for workstation VM

By Barry Brimer at 11/19/2018 - 11:30

I am planning to set up a virtualization host to host a Linux workstation
VM. It may also host a Windows VM down the road but not on the initial
list. I'm looking for suggestions as far as:

* oVirt or CentOS? (Did I miss a CentOS equivalent of RHV somewhere?) I'm
not interested in running VMware. Is it easy to upgrade oVirt or is it
disruptive to do so?

* Does anyone have real world experience running SPICE over a WAN with
VPN? I hear great things about SPICE .. but haven't heard much about how
it performs over a WAN .. which in this case is the Internet with an
SSL-based VPN.

I have plenty of Linux experience and am very comfortable with a command
line and config files, but wouldn't mind a graphical interface for some of
the virtualization components. I may expand to a second virtualization
host at some point, but it is not in the initial plan.

Any suggestions would be appreciated.

Thanks,
Barry

Re: Hypervisor and access method for workstation VM

By Gregory P. Ennis at 11/21/2018 - 19:28

I am planning to set up a virtualization host to host a Linux
workstation 
VM. It may also host a Windows VM down the road but not on the initial 
list. I'm looking for suggestions as far as:

* oVirt or CentOS? (Did I miss a CentOS equivalent of RHV somewhere?)
I'm 
not interested in running VMware. Is it easy to upgrade oVirt or is it 
disruptive to do so?

* Does anyone have real world experience running SPICE over a WAN with 
VPN? I hear great things about SPICE .. but haven't heard much about
how 
it performs over a WAN .. which in this case is the Internet with an 
SSL-based VPN.

I have plenty of Linux experience and am very comfortable with a
command 
line and config files, but wouldn't mind a graphical interface for some
of 
the virtualization components. I may expand to a second virtualization 
host at some point, but it is not in the initial plan.

Any suggestions would be appreciated.

Thanks,
Barry
Barry,

I am in to 3 months of experimenting with a lab machine that I use as
my desktop. I have used Centos 7.5 host and am using kvm. I have an
Intel I7-7700 with 64 gigs of memory, two M2 cards each with 250 gigs,
and a RAID 6 array with an LSI card. I have two other centos 7.5 guest
virtual machine and one windows10 virtual machine. After I figured
out how everything works ..... I love it.

The biggest problem I had was building a network bridge, (br0) I never
got it to stay working until I turned off NetworkManager on the host.

I am planning a production hypervisor in the next 3 to 6 months that
will have a mail server, database server, and gateway server as guests.

I also had some difficulty with gnome on the host when I started, but
finally got that fixed. I experimented with the Cinnamon desktop and
was very impressed as to they way it manages multiple guests and
desktops. I ended up switching back to gnome because that was all I
needed, and my fingers are used to it now. 

Hope this helps,

Greg Ennis

Re: Hypervisor and access method for workstation VM

By Scot P. Floess at 11/21/2018 - 21:55

Barry,

Using KVM isn't too bad - setting up a bridge is a little work but not
hard. I got tired of manually configuring so I wrote some Anisble scripts
to provision my hosts for KVM and virtualization. I do run Xen as my
hypervisor on a Dell Precision 470 (paravirtualization using CentOS).

Running virt-manager to assist you with installing VMs from ISOs is not
hard at all - but I'd recommend getting your bridge working first. For
RHEL/CentOS/Fedora VMs I use Cobbler and KOAN to spin up my VMs as I hate
doing so manually - but virt-manager works fine (and as an initial way to
install VMs is great). For Windows VMs, I use virt-manager.

As far as spice, yeah works great. Most of my VMs run non-gui mode, but
if I do need a desktop I happen to use tiger vnc. As for desktops, I used
FVWM forever and moved to KDE. Now I am all about LXDE as its really
lightweight (not as much as FVWM), but has just enough integration that
emails and IRC messages get me some sound and balloon notifications. And
a nice right click to get on the VPN. Alas it's supported on Fedora but I
never got around to attempt a RHEL/CentOS build from source.

My home network runs all my VMs - some for work related stuff (software
engineer not a sysadmin - but sometimes I play one in real life). At work
I typically use RHEV.

I'm on my tablet of I'd share some links I have...happy to follow up with
you if you want...

Sincerely,

Scot P. Floess

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Re: Hypervisor and access method for workstation VM

By Barak Korren at 11/19/2018 - 14:30

Hi Barry,

Please note that I've been involved with oVirt for a while now, so my
answers may be slightly biased...

בתאריך יום ב׳, 19 בנוב׳ 2018, 17:30, מאת Barry Brimer < ... at brimer dot org>:

Well, I wouldn't say that's an either/or question as oVirt is pretty much
built on top of CentOS these days.

Now, oVirt only really becomes interesting when you have 3 or more
hypervisor hosts. In that configuration you can have pretty smooth
zero-downtime upgrades.

If youre only going to have one host, I'd opt for CentOS + qemu-kvm-ev +
Cockpit/virt-manager/boxes.

* Does anyone have real world experience running SPICE over a WAN with
Well, I've used it with OpenVPN over the internet and it worked ok. But so
far only for server textual consoles, so can't say much about how well
would it stream GUI.

I have plenty of Linux experience and am very comfortable with a command
Well the virt-* suit of commands and virsh give you a lot of power in the
command line. Especially virt-builder that can give you working pre-built
VM images, but sometimes it's just quicker to get up and running with a GUI
tool like virt-manager.

Re: XPS 13 9370 / CentOS compat

By Gordon Messmer at 11/19/2018 - 11:14

On 11/19/18 5:02 AM, Leon Fauster via CentOS wrote:

One of the things that makes Dell my preferred vendor is that they
publish service manuals:
<a href="https://www.dell.com/support/home/us/en/19/product-support/product/xps-13-9370-laptop/manuals" title="https://www.dell.com/support/home/us/en/19/product-support/product/xps-13-9370-laptop/manuals">https://www.dell.com/support/home/us/en/19/product-support/product/xps-1...</a>

I haven't looked through the entire guide, but there is no section for
replacing WiFi, and the sections I've looked at don't appear to
illustrate a WiFi module.  Pretty good indication that it's an
integrated component, I guess.

That said, I'm using a 9370 with Qualcomm Atheros QCA6174 802.11ac
(Killer 1435) under Fedora (newer kernel, so I can't say much about how
well it works under CentOS).  I have not noticed any issues.

Beyond that, you can select which chipset you want when you order the
laptop.  I don't think there's any reason people should stay away from
the 9370.  It's one of the few laptops on the market whose manufacturer
actively develops Linux support for the hardware.

Re: XPS 13 9370 / CentOS compat

By Nataraj at 11/07/2018 - 13:09

On 11/7/18 7:28 AM, Leon Fauster via CentOS wrote:
I have an xps 13 9360 and had problems with the killer wireless. I got
virtually 0 support from Dell on this issue.  Some people who upgraded
their warranty to Dell Pro Support were able to get dell to send them a
new ethernet card, but some upgraded their support and still got no help.

I am running Ubuntu 18.04 on mine.  A while back, I don't know the exact
date, there was a substanial bugfix in the mainline kernel which
appeared in the Ubuntu  kernel roughly in the May/June 2018 timeframe
which improved support for the killer chip.  You might  check to see if
this bugfix got backported to redhat/centos.  Also some people have
tweaked some parameters in the driver and improved the performance of
their killer ethernets.

Before you order a card, I suggest you verify that your laptop actually
has one. (I believe if you download the manuals for your xps, it will
include instructions for replacing the card if it is replacable).  My
understanding was that as of the 2018 models, most, if not all of these
laptops switched from using cards to soldering the chips directly on the
motherboard.

I did replace my ethernet card with an Intel 8265 card (my xps is a 2017
model).  For me the 8265 works well with some wifi hubs, but has packet
loss problems with others, particularly some older hubs that I have.  I
did verify that the killer card performed well under windows 10 with the
same hubs which did not work well under Linux.

Nataraj

Re: XPS 13 9370 / CentOS compat

By Nataraj at 11/07/2018 - 13:47

On 11/7/18 9:09 AM, Nataraj wrote:
<a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041" title="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041">https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041</a>

Other than this wireless issue, everything else works on my XPS 9360,
including the touch screen.  You might try booting various live CD's.