<whitequark>
wpwrak: I've found the cause; the USB just cannot provide the current required
<whitequark>
it works just fine from 13V 300mA power supply
<wpwrak>
quite power-hungry then
<wpwrak>
or your USB is too weak
<whitequark>
yep, CCFL backlight isn't very energy-efficient
<whitequark>
also: the LCD itself eats 120mA@5V, and backlight wants 300mA@12V
<whitequark>
that's at least 720mA@5V total
<wpwrak>
seems that you need your own power supply, too
<whitequark>
ah, and also the module is powered through a FET (which was not selected by me). looks like additional 0.5V are falling on it
<whitequark>
I should have checked that in first place :/
<whitequark>
that FET thingy is quite mysterious I'd say. see: it's a P-channel FET and the INVTOFF signal is active low, so I've added two inverters on BC547
<whitequark>
when I feed it low level, it turns off, when I set it high, it turns on
<whitequark>
well, it works just the same if I cut the wire from the inverters to FET gate in two
<whitequark>
exactly.
<whitequark>
so it's floating in the air.
<whitequark>
how the hell it manages to work?!
<wpwrak>
;-)
<whitequark>
(I've simply forgot to solder in the gate. And when I noticed it... that was a shock, to say at least.)
<whitequark>
the inverters do not alter supply voltage in any way
<whitequark>
they just do some black magic, and FET does too, and it works.
<wpwrak>
a circuit designed by wizards ;-)
<whitequark>
then I'm a wizard
<whitequark>
which is doubtful :D
<DocScrutinizer>
wpwrak: ( how do you like that ? ) Well, it's OK if needed. I just don't see the exact purpose - rather contact the whole metal sheet with only one metallic spacer and use 3 plastic spacers
<wpwrak>
not sure if mechanically compatible plastic spacers are available
<DocScrutinizer>
usually such RC is used for "floating" GND that may have DC offset, or 50Hz, and you still want to make sure it's effectively grounded for ESD and RF
<DocScrutinizer>
well, just make those R and C NC, same effect :-D
<DocScrutinizer>
I gather you do all this to avoid GND loops?
<wpwrak>
NC ? then the feet/spacers wouldn't be grounded anymore
<wpwrak>
i don't know why all this is there :)
<DocScrutinizer>
aaah
<wpwrak>
i would just isolate them :)
<DocScrutinizer>
thought you're trying to sell it to me
<wpwrak>
naw, i
<wpwrak>
'm trying to figure it out ;-)
<DocScrutinizer>
3 of 4 are nonsense anyway, better make them NC
<DocScrutinizer>
and after you did, you can make the 4th 0R
<wpwrak>
the only use this would have would be to ground the conductive tape, right ?
<DocScrutinizer>
right, then you would need 2 times 0R
<DocScrutinizer>
when using that alu tape idea
<wpwrak>
2 times ?
<wpwrak>
ah, for each leg of the X ?
<DocScrutinizer>
sure, the 2 stripes are not connected, so each one needs a post to gnd it
<DocScrutinizer>
just ONE post per stripe
<wolfspraul>
aw_: hi good morning!
<DocScrutinizer>
more like good night :-D
<wolfspraul>
nah
<wolfspraul>
I'm sitting with my Venti Coffee here in bright morning sunlight
<aw_>
wolfspraul, good morning hi
<wolfspraul>
aw_: since it's Monday morning, let's chat a bit about the plan going forward
<DocScrutinizer>
I'm afraid I'll do the same when I don't manage to get some sleep next 3 h
<wolfspraul>
slowly rc3 is settling down
<wolfspraul>
let me look at the wiki page a bit :-)
<wolfspraul>
what's your plan this week?
<DocScrutinizer>
hi aw_
<aw_>
since the remaining 'packed for sale' is only 7 sets now and 23 set 'Avail-fix2b-l3' ready already; so need to do packing/assemble first this week
<aw_>
DocScrutinizer, hi
<wolfspraul>
41 units have been sent out
<wolfspraul>
just counted
<kristianpaul>
:o
<kristianpaul>
:-)
<wolfspraul>
ok, those 7 need to be reflashed/locked again
<wpwrak>
pretty good for no real launch :)
<aw_>
wolfspraul, hopefully you don't have a 10-Pack shipped in 2 ~ 3 days. :-)
<wolfspraul>
probably not
<wolfspraul>
so first you re-lock the 7, then finish another 23
<aw_>
so I may need to fo a batch work for 23 set in one time.
<wolfspraul>
nice
<wolfspraul>
that will bring the total that are 100% good to 71
<wolfspraul>
then we look at the other 19
<wolfspraul>
aw_: how about that other rc2 board?
<aw_>
i can do re-lock later
<wolfspraul>
it sounds like you need another week or so before we start looking into the 19, and talk about next runs such as rc4, labsw, or some other power supply I am currently investigating
<aw_>
aw_, no further on that bad rc2 board which I'll back to see it after 23 assembles and 7 relock.
<wolfspraul>
ok
<wolfspraul>
Werner continues with the NOR corruption, it sounds like he will get to the real bottom of that this week
<wolfspraul>
the relay keeps clicking away :-)
<DocScrutinizer>
joins in on a bit NOR curruption, it's fun
<wolfspraul>
aw_: how much does a cheap ESD gun cost in Taipei?
<DocScrutinizer>
phaser
<wpwrak>
"your life" ;-)
<wolfspraul>
wpwrak: actually we are shipping out nice rc3 units almost as fast as Adam can make them
<kristianpaul>
*g*
<aw_>
wpwrak, hi i just realized the dumpotp, and 'poke' peek' cmd in jtag, ignore my email on list, i should have tried script then asked. ;-)
<DocScrutinizer>
:-P
<wpwrak>
wolfspraul: i'm actually a little worried about that ;-)
<wolfspraul>
nah
<wolfspraul>
rc3 was work intensive, so be it
<wolfspraul>
we learn from that, and then rc4 will be better, hopefully (ahem)
<aw_>
wolfspraul, a cheap ESD gun? mmm...need to ask or/ check here wen first.
<wolfspraul>
yes
<wpwrak>
i think you need to find an assistant for adam, to help with those routine tasks. as runs get larger, the workload will even get worse
<wolfspraul>
if we can find a cheap one, maybe you can get one...
<wolfspraul>
one by one
<wolfspraul>
no customer was turned back, because we don't have more customers either
<wolfspraul>
it needs to scale in sync
<wpwrak>
what number do you have in mind for rc4 ?
<wolfspraul>
yeah well
<DocScrutinizer>
wolfspraul: I can send you some fractions of the lightning that hit my house a few weeks ago - I bottled it ;-D
<wolfspraul>
I was hoping nobody asks for a while ;-)
<wolfspraul>
I don't know
<wolfspraul>
there's a lot of things I want to achieve with rc4, including maybe boom and digikey sourcing (for some parts, not all)
<wolfspraul>
from a manufacturing standpoing, it should be 150 or so
<wolfspraul>
standpoint
<wolfspraul>
but then I want to improve the quality & product as much as possible, the whole dvi-i thing standing out
<wolfspraul>
or DocScrutinizer's 'X'
<wolfspraul>
what's the speed of rc3 sales? can we find new customers? distributors?
<wolfspraul>
some parts may have long lead times, such as power supplies (2 months)
<wolfspraul>
the cases took 8 months ;_)
<wpwrak>
how are rc3 sales composed ? mainly people who have been waiting already ?
<wolfspraul>
:-)
<wolfspraul>
no
<wolfspraul>
new random people from here and there
<wpwrak>
(case) ouch !
<wolfspraul>
well
<wolfspraul>
roh can probably do it faster, but for 150, it's at least a month or so
<wolfspraul>
and it's very expensive
<wpwrak>
try kristianpaul's shop ?
<wolfspraul>
maybe we can improve the metal sheet, buttons
<DocScrutinizer>
*cough* I get you those in < 1 week
<wolfspraul>
nah
<wolfspraul>
you guys are doing easy superficial talk :-)
<kristianpaul>
lacks QA
<DocScrutinizer>
not really, I got my acrylic shop here, and they do awesome things
<DocScrutinizer>
incl arbitrary CNC iirc
<wolfspraul>
the screws are still not right
<wolfspraul>
even though roh already spent an ungodly amount of time on them
<wolfspraul>
the feet cost a fortune
<wpwrak>
buttons should probably be milled. not sure how smooth the surface would be, but there doesn't need to be any fancy gluing and such
<wolfspraul>
the metal sheet and insulation layer is a pain
<wolfspraul>
gluing the buttons out of 3 pieces is a pain
<wolfspraul>
acrylic tolerances cause a lot of issues
<wolfspraul>
width tolerance
<kristianpaul>
indeed, noo way
<wolfspraul>
ok just trust me - a lot of work
<kristianpaul>
superficial*
<wpwrak>
the width tolerances are a bit outlandish, yes
<DocScrutinizer>
gluWHAT?
<wpwrak>
i dont think i could find any acrylic with such wide tolerances around here ;-)
<wolfspraul>
so with rc4, I want to improve a lot of things
<wolfspraul>
cheaper, easier to manufacture, etc.
<wolfspraul>
wpwrak: when did you do your last acrylic project?
<wpwrak>
i haven't worked acrylic yet
<wolfspraul>
ah :-)
<wpwrak>
but i've been looking around for sources. problem here is to get it in reasonable quantities
<wolfspraul>
there is always some problem
<wolfspraul>
the magic with rc3 is that we actually ship a good product
<wolfspraul>
not some 'but' included
<wpwrak>
the suppliers sell it in large sheets, often 1 x 2 m or such.
<wolfspraul>
so with rc4, I want to do my absolute best
<wolfspraul>
improvements all over
<DocScrutinizer>
wpwrak: you need a better shop
<wolfspraul>
from a volume perspective, it should be 150
<wolfspraul>
but I also need to be careful that I don't sit on a lot of unsellable junk later
<wolfspraul>
hardware inventory is nasty
<wpwrak>
DocScrutinizer: the small shops want to do the engraving, so they don't sell the raw material :)
<DocScrutinizer>
yes
<DocScrutinizer>
well, no
<wolfspraul>
the pixels of the 'M' logo should be surface scanned, that would look much nicer I think
<wolfspraul>
anyway, there are hundreds of little things
<DocScrutinizer>
not here, they do, but also sell raw
<DocScrutinizer>
any qty
<wolfspraul>
first step, let's make the electrical & layout as good as we can
<wolfspraul>
ah, I will add Joerg's 'X' idea now...
<wpwrak>
DocScrutinizer: hmm, there's one next door. haven't asked them yet. maybe i can get a little piece from them, to get started
<wolfspraul>
we could even explore a metal case
<wolfspraul>
what are the priorities?
<DocScrutinizer>
also add my concerns about a VGA connector with no real mech support from anything but PCB
<wolfspraul>
#1 find as many paying customers as fast as possible
<kristianpaul>
may be metal will be friendly with tolerances?
<wpwrak>
i wouldn't change the case a lot. it currently "works".
<wolfspraul>
#2 never go 'out of stock', whether rc3 or rc4 or ever, we must always be able to sell a 'video synthesizer'
<kristianpaul>
wpwrak: it changes by it self :)
<wolfspraul>
#3 improve rc4 as much as possible, make it the best possible product we can make
<wpwrak>
DocScrutinizer: isn't that pretty much "industry standard" ?
<wolfspraul>
#4 from a numbers perspective, I'd like to double the run size, i.e. from 80 to 160
<DocScrutinizer>
don't think so
<DocScrutinizer>
maybe on 2mm PCB gfk
<wolfspraul>
wpwrak: who do you think should have a labsw?
<wolfspraul>
what is the future potential of the board?
<wolfspraul>
I'm wondering whether we should make a labsw before/during/after rc4
<wolfspraul>
kristianpaul: do you want to manufacture some labsw? :-)
<wolfspraul>
I pay, you export from Colombia to the world! :-)
<kristianpaul>
hum, interesting :)
<wolfspraul>
yes, I think technically it's within reach for you and the shops you have easy access to in Colombia, no?
<kristianpaul>
yes i can do all remotelly from home :)
<kristianpaul>
almost*
<wolfspraul>
my problem with labsw right now is that I don't fully understand who should have one, ideally, or what the long term potential could be
<wolfspraul>
definitely, that's the way to go
<wolfspraul>
and use local shops, whenever possible
<wolfspraul>
pcb, smt/dip
<wpwrak>
(labsw) adam should have one. after that, i don't care ;-)
<wolfspraul>
come on, be more visionaire
<kristianpaul>
:)
<wolfspraul>
no other usefulness?
<kristianpaul>
production side i see, and agree wpwrak
<wolfspraul>
I see I need to do the homework myself
<wpwrak>
oh, sure. but "productizing" it would be tricky
<wolfspraul>
read more about what it is :-)
<wolfspraul>
oh no, I don't want to productize it
<wpwrak>
e.g., you probably can't sell it as 220 V capable
<wolfspraul>
it works with 110v now?
<wolfspraul>
and only that?
<kristianpaul>
at least you want to sell a board to extress M1
<wpwrak>
there's also the problem with sourcing case parts
<wolfspraul>
no need
<wolfspraul>
my current understanding is that it's just a hacker tool
<wolfspraul>
for use in production environment, of course
<wolfspraul>
or stress testing
<wolfspraul>
or whatever yet unthinkable use
<wpwrak>
(110 V) currently it's not designed to be suitable for voltages unsafe to touch. the coming design will be designed with 220 V in mind (with the usual safety margins, etc.)
<wpwrak>
but i have no clue what safety regulations would have to be observed to make it really marketable as 220 V-ready
<kristianpaul>
wpwrak: next version will allo to add temperature probes?
<kristianpaul>
that will be very usefull, all in a box
<kristianpaul>
no need for extra hubs or hacked usb cat5 adapters :)
<wpwrak>
for a usage point of view, i'd consider it "safe for ~30 VDC" and "can operate with 220 V, but treat the whole unit as if it was a live wire"
<wolfspraul>
come on, no safety regulations
<wpwrak>
kristianpaul: naw, no temp probes ;-))
<wolfspraul>
it's so amazing to me
<kristianpaul>
why?!!
<wpwrak>
wolfspraul: right, china :)
<kristianpaul>
:)
<wolfspraul>
Chinese stuff is flooding the world
<wolfspraul>
well, but better
<wolfspraul>
its' flooding the world, right?
<wolfspraul>
it's everywhere
<wolfspraul>
and I know how it's made
<kristianpaul>
yeah
<wolfspraul>
I feel it's like a global conspiracy
<wolfspraul>
on one side you have people who just totally don't care, don't know, dont' want to know, how they are randomly throwing shit together that maybe works or maybe not
<wolfspraul>
and they sell
<wolfspraul>
and on the other side you have those fine, sophisticated, suit-wearing and PhD possessing intellectuals
<wolfspraul>
that are debating about paragraph A.3 subsection 15.9, some tiny detail in their regulations
<wolfspraul>
but at home, everywhere in their lifes, they are using the crap from the monkeys
<wolfspraul>
what is going on???
<wolfspraul>
:-)
<wolfspraul>
it's hilarious to watch
<wolfspraul>
so whatever
<wolfspraul>
if you care about "safety regulations", then do so :-)
<wpwrak>
i think it's a question of exposure
<wolfspraul>
I know one thing for sure - whatever you make will be 100 times more thought-through and more secure than a lot of things that are surrounding me and that I use every day
<wolfspraul>
even if you think you are not meeting "safety regulations"
<wpwrak>
if we do something bad, we're easily exposed to the consequences
<wolfspraul>
yeah yeah
<wolfspraul>
:-)
<wolfspraul>
I wouldn't touch anything metallic in CHina on the street
<wpwrak>
;-)
<wolfspraul>
after you've watched the 'electricians' repairing stuff once, you won't
<zrafa>
wolfspraul: I do not touch any wall in my building outside my apartment
<zrafa>
wolfspraul: I saw the electricians here as well :)
<wolfspraul>
I don't step on any drain covers on the streets either
<wolfspraul>
just as any chinese wouldn't
<zrafa>
and I am not in china
<wolfspraul>
because still so many people are badly injured and die from falls into crappy covers that are loose, breaking, flip over, etc.
<wolfspraul>
wpwrak: you need to show more leadership, for the good of the world. you are the 'safety regulation'
<wpwrak>
;-))
<wolfspraul>
100 times better than any 'regulator' (read: totally incompetent bureaucrat)
<wolfspraul>
seriously, the system is broken. the regulation is just paper, totally meaningless except for the salaries of the people writing them, which are still real.
<wolfspraul>
we have to take care and make good stuff, and once we think it's good, it is.
<kristianpaul>
where is the plug to be pull? :)
<wolfspraul>
wpwrak: who do you think watches the consequences? :-)
<wolfspraul>
the regulators pouring over paper regulations?
<wolfspraul>
the factory workers?
<wolfspraul>
the business people selling what their workers produced?
<wolfspraul>
I think it's either you or nobody... :-)
<wpwrak>
well, one thing with high voltages is that i don't know that topic too well. i've been googling for the most obvious issues, but i may well be unaware of some others
<wolfspraul>
:-)
<wolfspraul>
you never stop
<wolfspraul>
the fact that you even think that already makes the difference!
<wolfspraul>
:-)
<wolfspraul>
anyway, just ranting, sorry
<wolfspraul>
reality is a funny game sometimes
<wolfspraul>
so... labsw only good for Adam?
<wpwrak>
plus, there are some compromises between safety and usability. e.g., the banana receptacles i use would be considered unsafe for the last 10-20 years
<wpwrak>
well, that's how many i plan to make :)
<wpwrak>
well, a 2nd one for myself, too :)
<wolfspraul>
what's the vision with this thing?
<wpwrak>
dunno. the electronics are be reproduced elsewhere. mechanics are a little harder. that is, front/rear panel and case
<wpwrak>
s/are/can/
<wolfspraul>
I need to think about it more.
<wolfspraul>
where it fits in the Qi universe in the long run
<wpwrak>
(electronics) there are some electromechanical bits i'm not entirely happy about. e.g., the relays can be socketed. but the sockets are a sourcing problem.
<kristianpaul>
automate for  sure
<wpwrak>
kristianpaul: it;s either labsw or throwing the power switch ~30'000 times ;-)
<kristianpaul>
oh yes :)
<wolfspraul>
I had a power strip once with built-in http server and remote control etc.
<wolfspraul>
forgot the brand, some German thing
<kristianpaul>
i was thinking too in remote control of a future M1 freedom box as rejon called
<kristianpaul>
ah yes that above
<kristianpaul>
but why not temp sensor wpwrak ? :)
<kristianpaul>
or i'm missing a i2c port somwhere ...
<wpwrak>
what would be the use of knowing the temperature inside the labsw ?
<kristianpaul>
no no, room temperature
<wolfspraul>
could labsw control a temperature chamber?
<wpwrak>
well, that should be similar. labsw shouldn't get very warm
<blogic>
hope i find the time to start playing with the dongles
<blogic>
... on the weekend
<wolfspraul>
blogic: thanks for buying stuff from Tuxbrain! :-)
<blogic>
haha
<wolfspraul>
yes!
<wolfspraul>
:-)
<blogic>
its nice to see that the usb part of the dongle is a meag32u2
<blogic>
wpwrak: you made these dongles, right ?
<blogic>
as in the atusb 802.15.4 thing
<wpwrak>
ah yes, guilty as charged ;-)
<blogic>
nice
<wpwrak>
glad you like them ! :)
<wpwrak>
blogic: you got a pair of atusbs ?
<wpwrak>
or atben+atusb ?
<blogic>
a pair
<blogic>
i have no nano note
<blogic>
i want to pair 2 openwrt devices
<blogic>
i have a spare tpl1043 and rspro
<blogic>
so i will probably use those 2 units
<wpwrak>
any specific application in mind ?
<blogic>
not sure
<blogic>
i was contacted by a few italians that wanna play with this stuff
<blogic>
and asked for me to port the drievrs and apps to openwrt
<blogic>
so i said, sure send me hw pr0n
<wpwrak>
heh, nice :)
<jow_laptop>
kyak: you should maybe backport the latest opkg fix from trunk, the current version contains a double free which may lead to a seg fault with a corrupted status db on certain package removal operations
<kyak>
jow_laptop: thanks for notifying; that would be pretty easy, since we are on trunk already.. Just a matter of catching up with trunk svn
<kyak>
cool, all patches rebased on top even without conflicts
<wolfspraul>
kyak: thanks for helping, as usual!
<kyak>
wolfspraul: it's my pleasure to do at least something useful :)
<kyak>
i haven't been very active recently after changing my job..
<kyak>
this employer sure does know how to make me busy
<wpwrak>
kyak: you gave up a job that let you do whatever you want pretty much 100% of the time ??!
<wolfspraul>
kyak: he, understand :-) but I'm not so worried about slow, as long as we keep chugging away things will be fine
<wolfspraul>
and slowly but surely the software on the Ben actually becomes usable :-)
<Ayla>
hi
<Ayla>
how can I copy a full directory with /usr/bin/install from a makefile?
<jow_laptop>
$(CP) ... ...  ?
<Ayla>
is that a clean way to do it?
<Ayla>
everything seems to use $(INSTALL) instead
<jow_laptop>
depends
<jow_laptop>
many openwrt packages use $(CP), especially in conjunction with PKG_INSTALL as the inner Makefile takes care of moving files to the right palces with correct permissions then
<Ayla>
I'm using buildroot :)
<jow_laptop>
buildroot follows the same principle
<Ayla>
$(CP) is not defined here
<jow_laptop>
ok, then the answer is you can't
<jow_laptop>
afair you can use wildcards to install more than one file
<Ayla>
that would be surprising
<Ayla>
ah, ok
<jow_laptop>
e.g. install foo/* target/foo/
<Ayla>
but here the 'foo' directory has subdirs...
<jow_laptop>
well, bad luck ;)
<jow_laptop>
afaik install is not meant for recursive operation
<jow_laptop>
either name each dir explicitely or use some find | xargs construct or use cp
<Ayla>
meh.
<Ayla>
I'll just use cp then
<kyak>
wpwrak: yeah, basically i did what you said :)
<wpwrak>
got tired of living in paradise ? :)
<kristianpaul>
brbr 19°C and cold mornings again
<kristianpaul>
but is nice i want do something usefull today ;)
<kristianpaul>
cool 0,0041 error% now one more flip flop and i guess will be enought
<wpwrak>
it's kinda scary that you approach the correctness of register accesses with statistics ... :)
<kristianpaul>
oops, how i should then?
<wpwrak>
it should just work 100% ;-)
<kristianpaul>
ah sure !
<kristianpaul>
I'm on that, my concern still :)
<larsc>
wpwrak: all modern memory is based on statistics
<larsc>
probability theory is right word i guess
<wpwrak>
larsc: flash is evil ;-)
<larsc>
harddisk use similar algorithems
<larsc>
and even ram does
<kristianpaul>
he, well hardisk are always dying is it? :)
<wpwrak>
ECCs are like safety belts. they're good to have, but if your actions depends on them being there, you're probably doing something very wrong :)
<larsc>
uhm, all modern memory uses some kind of ecc
<larsc>
otherwise you wouldn't be able to get such high densities
<wpwrak>
oh, they have ECC (well, most do). but few depend on it as extensively as flash. particularly NAND flash.
<wpwrak>
not sure about what disks do internally, though
<larsc>
sure?
<wpwrak>
and in any case, there are parts of a system that are generally considered error-free. registers of local peripherals tend to be among them.
<larsc>
you can stop progress ;)
<wpwrak>
well, look at the data sheets. NAND is only guaranteed after ECC. NOR without. DRAM is very often even used without any error correction.
<larsc>
i was more thinking about hdds
<wpwrak>
ah, dunno about HDDs. they do it the way i like it - present a nice and fairly reliable interface, keep the quantum physicals out of my view :)
<larsc>
hehe
<wpwrak>
s/physical/physic/Â Â # gah
<kristianpaul>
weee, i listened a noaa satellite, now be prepare to record, what was that sox command?
<kyak>
hm. i'm playing with Ben under Windows right now by chance. Since there was no luck using RNDIS, it was disabled at all. Now i'm trying with linux-cdc-acm.inf
<kyak>
now i have the COM6 device named "Gadget Serial"
<kyak>
it seems running fine - i.e. Windows doesn't report any error codes
<kyak>
but i try to connect to COM6 with putty, and get "Unable to open connection"
<kyak>
i wonder what is this driver even doing...
<kyak>
it seems like USB serial
<kyak>
but what needs to be done from Ben's side to accomplish it?
<kyak>
kernel doc says that i need to have either RNDIS or CDC ECM. This is already accomplished since RNDIS configuration is disabled in linux kernel
<kyak>
and i can't have both on Windows
<kristianpaul>
ah, rec :)
<kyak>
i would expect linux-cdc-acm.inf to create a network interface instead of some non-working serial//
<kristianpaul>
kyak: Great !! so just enable gadget serial when compiler kernel and done?
<kristianpaul>
i guess the ethernet usb must be disabled?