3D printing forums

You should be able to see those rotate circle things.  Because you can't that implies something is wrong with your video driver.  Try updating to the latest driver.  Try posting your log file here (you can find the log file under the help menu - it's cura.log).   cura 5 uses newer graphics libraries I think.  

I haven't tried 5.0 yet but for older versions I downloaded the "appImage".  Then I had to go and change it to execute mode (I use chmod but I'm sure there are many ways) and then you can run it from command line e.g. "./cura.appImage" or you should probably just be able to double click the file.    

Install and run Cura from the Ultimaker website.  Choose any printer since it doesn't matter since you don't have one.  Import a model (usually an STL file).  Click "slice" in bottom right corner.  Then button turns to "save" so click that.

How to rotate a part in Cura 5.0? It's very hard to rotate wihtout references. 1 hour to rotate for the right side... 😅  

Have you set the Home Offsets in the printer?  If you have not then use a decent ruler and: Auto-Home the printer. Using the LCD controls: Move the nozzle up 3mm Move the nozzle in the X to a point 2.5mm in from the LEFT edge of the build plate. Move the nozzle in the Y to a point 2.5mm in from the FRONT edge of the build plate. Drop the Z to "0". Select "Set Home Offsets" on the LCD. Select "Save Settings" on the LCD. Move the nozzle up 3mm again and move the nozzle to X=127.5 and Y=127.5.  The nozzle should be at the mid point of the build plate.   The snippet below will work for your startup.  The purge line will go along the bottom 12.5mm from the edge PROVIDED you have set the Home Offsets correctly.   ;Begin StartUp M106 S0 ;Layer cooling fan off G90 ;Switch to absolute positioning M82 ;Extruder absolute mode G21 ;metric units G28 ;Auto-Home all axes G1 Z15 F600 ;Move up M140 S{material_bed_temperature_layer_0} ;start to heat the bed M109 S{material_print_temperature_layer_0} ;heat the hot end and wait for it M190 S{material_bed_temperature_layer_0} ;wait for the bed just in case it's not up to temp yet G92 E0 ;Set position of extruder to 0 G0 X5 Y10 F1500 ;Move to start of purge G0 F600 Z0.3 ;Move Z to 0.3 G1 F1500 X180 E15 ;Extrude a line of filament at 25mm/sec G1 F1200 Z2 ;Raise Z G92 E0 ;Set extruder position to zero G1 F3000 X0 Y0 Z10 ; move back to the left front corner for start of print in case the nozzle oozes ;End of Startup