Hello brent, thanks for the response, let me see what i forgot to check before i stupidly ask stuff on the forums 😅 .
I already searched the forum for brother scanner and most of them are either network setup related or bringing the scanner at all to work, which does not fit my case, as my scanner is working but not how it should be 🙁.
I installed gscan2pdf and i have the same result as with simple-scan. only a third of the paper got scanned.
On the Brother website they have a rpm and deb package for driver installation, i never used them on ubuntu/popos as there it worked out of the box and also scanned the whole page (why shouldnt it right ...).
I dont want to bother the solus devs with stupid scanner drivers, maybe i work myself through it if nothing works, cant be that hard and the motivation is already there 🙂.
I dont quite understand the last part with the manual and drivers, could you elaborate what you mean?
as a workaround for my wife, i installed ubuntu in a vm so she can scan there for the time being.
edit: a little bit of extra information
# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first make sure your
# scanner is powered up and properly connected to your computer.
# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a kernel SCSI driver for your SCSI adapter.
# Also you need support for SCSI Generic (sg) in your operating system.
# If using Linux, try "modprobe sg".
found USB scanner (vendor=0x04f9 [Brother], product=0x0468 [DS-640]) at libusb:004:003
could not open USB device 0x1d6b/0x0003 at 004:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 003:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0003 at 002:001: Access denied (insufficient permissions)
could not open USB device 0x19f7/0x0003 at 001:004: Access denied (insufficient permissions)
could not open USB device 0x046d/0xc539 at 001:003: Access denied (insufficient permissions)
could not open USB device 0x046d/0xc541 at 001:002: Access denied (insufficient permissions)
could not open USB device 0x1852/0x7022 at 001:005: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 001:001: Access denied (insufficient permissions)
# Your USB scanner was (probably) detected. It may or may not be supported by
# SANE. Try scanimage -L and read the backend's manpage.
# Not checking for parallel port scanners.
# Most Scanners connected to the parallel port or other proprietary ports
# can't be detected by this program.
# You may want to run this program as root to find all devices. Once you
# found the scanner devices, be sure to adjust access permissions as
device `brother4:bus1;dev1' is a Brother *DS-640 USB scanner
scanimage -pv --format=jpeg --output-file=/home/purebread/test.jpg
scanimage: rounded value of br-x from 215.9 to 215.88
scanimage: rounded value of br-y from 355.6 to 355.567
scanimage: scanning image of size 1696x2799 pixels at 24 bits/pixel
scanimage: acquiring RGB frame
scanimage: min/max graylevel value = 0/255
scanimage: read 14241312 bytes in total