Managed to get some network from my smartphone by Bluetooth...
So I am running 5.4LTS now.
Nothing changed. No sound, no wifi. 
And a flickering line (1-2 pixels) at the top of the screen. Flickers once or twice a second.
Man, that update was a huge downer... I need to actually work. Don't really want to change distribution...
can you returns
inxi -Fxxxzahave you also
kernels5*-headers installed , and version linux-firmware
sudo pacman -Qi linux-firmwareCurrently running newest kernel and firmware again. Playing around the whole day instead of working... nice.
inxi -Fxxxza
System: Host: jwe Kernel: 5.7.9-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.1.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.7-x86_64 root=UUID=fee7cebb-62e0-49e9-b175-14923f78e09b rw quiet
udev.log_priority=3
Desktop: Cinnamon 4.6.6 dm: LightDM 1.30.0 Distro: Manjaro Linux
Machine: Type: Laptop System: Dell product: XPS 13 9300 v: N/A serial: <filter> Chassis: type: 10 serial: <filter>
Mobo: Dell model: 077Y9N v: A00 serial: <filter> UEFI: Dell v: 1.0.11 date: 05/08/2020
Battery: ID-1: BAT0 charge: 47.4 Wh condition: 47.4/51.0 Wh (93%) volts: 8.5/7.6 model: BYD DELL FP86V02 type: Li-poly
serial: <filter> status: Full
CPU: Topology: Quad Core model: Intel Core i7-1065G7 bits: 64 type: MT MCP arch: Ice Lake family: 6 model-id: 7E (126)
stepping: 5 microcode: 78 L2 cache: 8192 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 23968
Speed: 1000 MHz min/max: 400/3900 MHz Core speeds (MHz): 1: 987 2: 1000 3: 1000 4: 1000 5: 1000 6: 1001 7: 1000
8: 1000
Vulnerabilities: Type: itlb_multihit status: KVM: Split huge pages
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Enhanced IBRS, IBPB: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics: Device-1: Intel Iris Plus Graphics G7 vendor: Dell driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:8a52
Display: x11 server: X.Org 1.20.8 driver: modesetting alternate: fbdev,intel,vesa tty: N/A
OpenGL: renderer: Mesa Intel Iris Plus Graphics (ICL GT2) v: 4.6 Mesa 20.1.3 direct render: Yes
Audio: Device-1: Intel Smart Sound Audio vendor: Dell driver: snd_hda_intel v: kernel bus ID: 00:1f.3 chip ID: 8086:34c8
Sound Server: ALSA v: k5.7.9-1-MANJARO
Network: Device-1: Intel Killer Wi-Fi 6 AX1650i 160MHz Wireless Network Adapter vendor: Bigfoot Networks driver: iwlwifi
v: kernel port: 4000 bus ID: 00:14.3 chip ID: 8086:34f0
IF-ID-1: bnep0 state: unknown speed: N/A duplex: N/A mac: <filter>
IF-ID-2: br-706d6083b3e5 state: up speed: 10000 Mbps duplex: unknown mac: <filter>
IF-ID-3: docker0 state: down mac: <filter>
IF-ID-4: veth027e7f0 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-5: veth05b0955 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-6: veth07c0d69 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-7: veth09827f9 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-8: veth11bf13e state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-9: veth1c0d8a9 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-10: veth1d36ab4 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-11: veth1eaeebd state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-12: veth20f9526 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-13: veth244b7ef state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-14: veth24dab5a state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-15: veth29aeeef state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-16: veth341f795 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-17: veth429d4e2 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-18: veth465aaa9 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-19: veth4661ce5 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-20: veth49322ca state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-21: veth4c48e0a state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-22: veth4d98829 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-23: veth4ddf1d0 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-24: veth552d798 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-25: veth5d452ef state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-26: veth6e91c4c state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-27: veth73004d9 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-28: veth770e338 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-29: veth7751005 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-30: veth7de4507 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-31: veth7fb7be5 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-32: veth7fd10fc state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-33: veth8418d98 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-34: veth857a3af state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-35: veth88b6a8f state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-36: veth89a390f state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-37: veth93601c7 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-38: veth9b02b0b state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-39: vethb07d88a state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-40: vethb6a1b61 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-41: vethbb14190 state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-42: vethc20e37d state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-43: vethce45c9a state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-44: vethf507c8f state: up speed: 10000 Mbps duplex: full mac: <filter>
IF-ID-45: vethf65b260 state: up speed: 10000 Mbps duplex: full mac: <filter>
Drives: Local Storage: total: 476.94 GiB used: 105.61 GiB (22.1%)
ID-1: /dev/nvme0n1 vendor: SK Hynix model: PC611 NVMe 512GB size: 476.94 GiB block size: physical: 512 B
logical: 512 B speed: 31.6 Gb/s lanes: 4 serial: <filter> rev: 11000111 scheme: GPT
Partition: ID-1: / raw size: 97.66 GiB size: 95.62 GiB (97.92%) used: 36.10 GiB (37.8%) fs: ext4 dev: /dev/nvme0n1p3
ID-2: /home raw size: 363.56 GiB size: 356.85 GiB (98.16%) used: 69.50 GiB (19.5%) fs: ext4 dev: /dev/dm-0
ID-3: swap-1 size: 15.62 GiB used: 0 KiB (0.0%) fs: swap swappiness: 60 (default) cache pressure: 100 (default)
dev: /dev/nvme0n1p2
Sensors: System Temperatures: cpu: 52.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info: Processes: 506 Uptime: 1m Memory: 15.23 GiB used: 2.31 GiB (15.2%) Init: systemd v: 245 Compilers: gcc: 10.1.0
Shell: bash v: 5.0.18 running in: gnome-terminal inxi: 3.0.37
sudo pacman -Qi linux-firmware
Name : linux-firmware
Version : 20200716.r1675.1d1c80b-1
Description : Firmware files for Linux (Manjaro Overlay Package)
Architecture : any
URL : https://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git;a=summary
Licenses : GPL2 GPL3 custom
Groups : None
Provides : None
Depends On : None
Optional Deps : None
Required By : linux54 linux56 linux57
Optional For : None
Conflicts With : linux-firmware-git kernel26-firmware ar9170-fw iwlwifi-1000-ucode iwlwifi-3945-ucode iwlwifi-4965-ucode iwlwifi-5000-ucode iwlwifi-5150-ucode iwlwifi-6000-ucode rt2870usb-fw rt2x00-rt61-fw
rt2x00-rt71w-fw
Replaces : kernel26-firmware ar9170-fw iwlwifi-1000-ucode iwlwifi-3945-ucode iwlwifi-4965-ucode iwlwifi-5000-ucode iwlwifi-5150-ucode iwlwifi-6000-ucode rt2870usb-fw rt2x00-rt61-fw rt2x00-rt71w-fw
Installed Size : 558,56 MiB
Packager : Helmut Stult <helmut@manjaro.org>
Build Date : Do 16 Jul 2020 18:47:35 CEST
Install Date : Mo 20 Jul 2020 15:24:52 CEST
Install Reason : Explicitly installed
Install Script : No
Validated By : Signature
Just installed the headers for 54, 56 and 57. They weren't isntalled yet...
Not sure but could this have something to do with networkmanager if that got updated. If so could downgrading resolve the issue at least for the moment?
There seems to had not been any update to that. I also thought it could be nm.
But sound is also broken...
I also had no luck at all reverting like here.
Sound and Wifi stays broken.
Only solution seems to be to install a different distribution
Use Timeshift auto snap for machines like xps 13, faced similar issue on xps 13 9343 just restored my image, everythings fine now
I will in the future. Too late for now...
I relied on the "stable" and recommendation of colleagues 
I can't speak to the stable update, but, My roommates machine lost the network shortly after the last testing update. We were both on the 5.8 kernel. I rolled him back to the 5.7 and all is good. Now as for sound he lost his bluetooth speakers, but his phone worked fine. Had him switch to a old set of speakers that aren't bluetooth and removed the bluetooth altogether since transferring files to the phone is faster via USB anyway, and that's all he needed the bluetooth for.
that's some aggressive fix..xD
For now I tried kernel versions 54, 56, 57 and the previous linux-firmware.
Nothing helps. Sound and wifi stay broken. Really annoying. Couldn't work the whole day because Manjaro totally messed up my machine today 
It was just a quick workaround till the next kernel update for testing. That more than likely will address both issues. I just did not feel like spending half a day trying to figure out what got broken. Then if it doesn't correct the issues I can yell for help.
@DasJott and you don't have a snapshot at all you can rollback to? For now I'd use whichever kernel you prefer, install timeshift-autosnap, then try getting one of the two issues resolved first then move on to the second issue.
I rolled back to the last LTS Kernel, even though it perfectly worked with newer versions before.
I also rolled back linux-firmware.
But Manjaro still has no sound and no wifi. The worst update that could have ever happend. Why is that one called stable?
I seem to have to setup my system completely to another distribution in order to be able to work again. This would be day 2 where Manjaro keeps me from working... Can not do that, even though I always loved and recommended Manjaro.
I don't know, what to try anymore. This is so messed up...
these changes comes from Kernel Stable , not from Manjaro
Btw: On the first command I execute in terminal, I get those lines:
[ WARN:0] global /build/opencv/src/opencv-4.3.0/modules/videoio/src/cap_gstreamer.cpp (1758) handleMessage OpenCV | GStreamer warning: Embedded video playback halted; module source reported: Could not read from resource.
[ WARN:0] global /build/opencv/src/opencv-4.3.0/modules/videoio/src/cap_gstreamer.cpp (888) open OpenCV | GStreamer warning: unable to start pipeline
[ WARN:0] global /build/opencv/src/opencv-4.3.0/modules/videoio/src/cap_gstreamer.cpp (480) isPipelinePlaying OpenCV | GStreamer warning: GStreamer: pipeline have not been created
Which surely is an effect of the sound not working.
Worth noting, as per my message in the original thread, that the while the latest 54 kernel screwed up for me, the one before that works fine. I gave the kernel and firmware versions before but in case you've lost them here's what I did to get things working fine - sound and wifi and everything else - on my xps 13 9300:
sudo pacman -U /var/cache/pacman/pkg/linux-firmware-20200519.8ba6fa6-1-any.pkg.tar.zst /var/cache/pacman/pkg/linux54-5.4.44-1-x86_64.pkg.tar.zst
Good luck with it!
Thank you very much for joining in here!
I already tried that kernel and firmware, but I did again right now.
$ uname -r
5.4.44-1-MANJARO
$ sudo pacman -Q linux-firmware
linux-firmware 20200519.8ba6fa6-1
No sound, no wifi. I really don't know what to try. I didn't do anything special on WiFi or sound before, so nothing to eventually revert there.
$ sudo ip link set dev wlp0s20f3 up
Cannot find device "wlp0s20f3"
Can't really help as it is probably an issue in the Kernel to be fixed upstream, but what does the following commands tell you?
lspci
lsusb
Does it even see the hardware?
// EDIT: I see you already provided hardware information on top but it is different commands anyway so you can still have a look at it
// EDIT 2: also is your Bios up to date? it seems like it from information provided above, but the date does not match what I see on Dell site. It says 22 May 2020 (and updated 16 July 2020) but your bios seems to be from 05 May 2020 but with version of the latest bios on Dell website.. seems weird to me. https://www.dell.com/support/home/en-us/product-support/product/xps-13-9300-laptop/drivers
From my researches theoretically the WIFI should work out of the box since Kernel 5.6.2+
can you also check
sudo journalctl -b0 -g wlp
sudo journalctl -b0 -g ilwifi
sudo journalctl -b0 -p4The BIOS is up to date. Updated it as one of the first steps right after installing Manjaro Cinnamon.
The commands lspci shows that the card is recognized and even the module is loaded correctly.
From the network settings I can see that the device is named wlp0s20f3 but when I try sudo ip link set dev wlp0s20f3 up, I get Cannot find device "wlp0s20f3".
I know the wiki pages for that laptop as well as for the wifi card. I found an older thread and will try what solved the problem there and come back here in a bit.
Edit: Nothing changed. Still no sound, no wifi.
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