Can't enter BIOS/UEFI menu any more

I have a weird problem with my Acer notebook: I can't enter the BIOS/UEFI anymore. When i hit F2 my screen just stays black with a white static underline i the upper left corner. I had the same problem before and Acer support could fix the issue by resetting the password and BIOS. Acer support says, it happend because their Laptops do not support Linux. Does it happen, that Linux or a an Application running under Linux changes the BIOS? It happend with two different distros, Deepin and Manjaro, in one case with a dualbootwith Windows.

inxi -F:

System:    Host: spacetimeship Kernel: 4.14.65-1-MANJARO x86_64 bits: 64 Desktop: KDE Plasma 5.13.4 
           Distro: Manjaro Linux 
Machine:   Type: Laptop System: Acer product: Swift SF314-52 v: V1.07 serial: <root required> 
           Mobo: KBL model: Suntory_KL v: V1.07 serial: <root required> UEFI: Insyde v: 1.07 date: 11/02/2017 
Battery:   ID-1: BAT0 charge: 28.7 Wh condition: 37.7/50.8 Wh (74%) 
CPU:       Topology: Quad Core model: Intel Core i5-8250U bits: 64 type: MT MCP L2 cache: 6144 KiB 
           Speed: 846 MHz min/max: 400/3400 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 
           7: 800 8: 800 
Graphics:  Card-1: Intel UHD Graphics 620 driver: i915 v: kernel 
           Display: x11 server: X.Org 1.20.1 driver: intel unloaded: modesetting resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (Kabylake GT2) v: 4.5 Mesa 18.1.6 
Audio:     Card-1: Intel Sunrise Point-LP HD Audio driver: snd_hda_intel 
           Sound Server: ALSA v: k4.14.65-1-MANJARO 
Network:   Card-1: Intel Wireless 7265 driver: iwlwifi 
           IF: wlp3s0 state: up mac: f8:59:71:6d:e5:8e 
Drives:    Local Storage: total: 238.47 GiB used: 31.09 GiB (13.0%) 
           ID-1: /dev/nvme0n1 vendor: Intel model: SSDPEKKW256G7 size: 238.47 GiB 
Partition: ID-1: / size: 224.77 GiB used: 31.09 GiB (13.8%) fs: ext4 dev: /dev/nvme0n1p2 
           ID-2: swap-1 size: 8.80 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/nvme0n1p3 
Sensors:   System Temperatures: cpu: 44.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 193 Uptime: 10m Memory: 7.67 GiB used: 2.76 GiB (36.0%) Shell: bash inxi: 3.0.20 

Read this first post.
If after doing the 2 [Additional UEFI commands] and reboot to same problem, check with command "efibootmgr" if 'manjaro' entry has again disappeared. Then you have to see the Acer link in [ Some difficult UEFI setups] if that helps.

Good luck.

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Ok, I just tried it again and there weren't any problems anymore, I have no clue what happened but thank you anyway for your reply.

Okay...good, but if you want us to take a look, and we won't mind really, at Manjaro's terminal, provide...

efibootmgr -v
sudo parted -l
sudo blkid
findmnt -s
findmnt /boot/efi

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