Hello Gene and Eric, thank you for your help!
I followed your step and the following is the output of the dmesg | fgrep mmc command in terminal:
[ 1.423600] mmc-bcm2835 fe300000.mmcnr: could not get clk, deferring probe
[ 1.459631] mmc-bcm2835 fe300000.mmcnr: mmc_debug:0 mmc_debug2:0
[ 1.459648] mmc-bcm2835 fe300000.mmcnr: DMA channel allocated
[ 1.513627] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[ 1.515506] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 1.517191] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 1.520211] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[ 1.521895] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 1.527362] mmc0: SDHCI controller on fe340000.mmc [fe340000.mmc] using ADMA
[ 1.604981] mmc1: new high speed SDIO card at address 0001
[ 1.637565] mmc0: new ultra high speed DDR50 SDHC card at address aaaa
[ 1.638612] mmcblk0: mmc0:aaaa SC32G 29.7 GiB
[ 1.642156] mmcblk0: p1 p2
[ 1.657363] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 4.081136] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
How is it? Any problem?
I activated the verbose logging for Mount both in Ekos and in Drivers, the full log is attached. I made a little movement just off Polaris, to activate the tracking and after a while a second one, still very small. I didn't activate PHD2. I saw with my eyes at least two jumps on the KStars sky map and one on the Ekos Summary page as I saw RA numbers jump for a fraction to a different number. All this should be written in the Log. Just to give a rough estimation, one event happened at 23:42 about 10-20 seconds, a second one at 23:43, first 10 secondes, and the other one at 23:45 first 10 seconds.
Checking the log on these times I see that the RA changes suddenly: on the first movement RA is set to 14:49:02 and usually this is the reported value, but at 23:43:02.620 it jumps at 14:48:57 or at 23:42:18.266 it jumps to a striking 2:49:02, messing the DEC too, from 82:24:52 to 13:48:14. For the second movement DEC is set to 80:39:14 but at 23:44:53.680 DEC jumps at 83:35:58.
If you see the log, you'll find many other example. I really hope that you can understand something!!!
If there's anything more I have to do, let me know and thank you again for your help!!!