Am 07.11.2018 um 15:15 schrieb Jim Perrin jperrin@centos.org:

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

...

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)?

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. https://www.amazon.com/gp/product/B01MZA1AB2

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 ...

-- LF

On 11/7/18 9:09 AM, Nataraj wrote:

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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

I don't have reference to this bug in redhat/centos, but you might check...

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041

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

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CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos

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

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 ...

One of the things that makes Dell my preferred vendor is that they publish service manuals: https://www.dell.com/support/home/us/en/19/product-support/product/xps-13-93...

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.

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 lists@brimer.org:

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?

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

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.

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

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.

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.

Any suggestions would be appreciated.

Thanks, Barry _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos

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

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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

+--------------------------------------------------------+ | Projects | +--------------------------------------------------------+

Personal https://github.com/sfloess Architect https://github.com/FlossWare Co-Architect https://github.com/Solenopsis

Contributor https://github.com/Quest-For-Knowledge Contributor https://github.com/sahabhaagita