[iPAQ] strange display/framebuffer behaviour (mostly for Compaq guys i think) (sorry, i forget to attach .gz)

hi all,

i'm working on port of some application. for some reasons i decided to
make direct framebuffer port and not X port. during framebuffer
programming i have had very strange problem. after some investigation i
discovered this:

(upper left corner of framebuffer is lower left corner of display if iPAQ
is in normal portrait orientation)

- most left column is NEVER visible
- second column is visible as first
- last column (320) is repeated two times on the end of display
(if you don't understand - my english is horrible - just look bellow for
test and examples)

i want to know, if this is normal iPAQ behaviour or if this is just
hardware problem of my piece (i think, this is probably HW problem and not
framebuffer driver problem).

i attached three test pictures (sorry for attachment, but gzipped is 2kB
only), then you can easy test it too.

just cat file to /dev/fb/0

a) cat column_1 >/dev/fb/0
- should display black screen with white line in the most left column
- i see nothing on my machine, just black screen

b) cat column_2 >/dev/fb/0
- should display black screen with white line in second column
- i finaly see white line in first column

c) cat column_320 >/dev/fb/0
- should display black screen with white line in last (320) column
- i see "doubled" white line in columns 319 and 320

please, test it and answer me, thanx :-)

ugh, my machine is H3660, kernel 2.4.16-rmk1-hh6

                        - JirkaS