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<
parco >
hi all, after following the manual build guide, I'm seeing "EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem" during boot up
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<
parco >
then fails to boot since it can't write to /etc/machine-id
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kilobyte >
parco: the first message is normal -- it just meant that ext4 partially ignored the mount option
01:14
<
kilobyte >
for real read-only you'd need ro,norecovery; otherwise it will still write to the $DISK while processing journal, and only then become read-only
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<
kilobyte >
the userland (be in initrd or an init script) is then supposed to remount / rw
01:16
<
parco >
I see, i had assumed something was wrong since a bunch of stuff fails to start, including the journal
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<
kilobyte >
"including the journal"? It's a part of ext4...
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<
parco >
i end up being presented with a "LXC_NAME login:" prompt
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<
kilobyte >
are you mounting it as ext2?
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kilobyte >
boot.cmd is for u-boot, at that time you already have the kernel loaded, and the root= line doesn't include filesystem type
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<
kilobyte >
/etc/machine-id is supposed to be written once, so I guess it's lacking on your system
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kilobyte >
then some tool notices it missing, tries to create it, despite / not having been remounted rw yet
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parco >
the output log says something about that, i'm just having a hard time copying the log :/
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<
kilobyte >
not sure if there's something wrong other than missing /etc/machine-id; you can try creating it manually to see if that'd help
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<
parco >
going to try a brand spankin new SD card, then i'll try to manually populate /etc
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<
parco >
same login prompt, is there a username and password i could punch in here?
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<
parco >
LXC_NAME login:
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kilobyte >
that's unrelated to booting, you have the userland up, it's regular Linux administration at this point
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<
parco >
that's good news, i think :)
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<
parco >
I'm just trying to get past this login prompt so I can try to load some kernel modules
01:45
<
kilobyte >
it's quite clearly written, look around the "Welcome to Ubuntu 18.04.1 LTS!" line
01:45
<
parco >
"Set hostname to <LXC_NAME>" being near the /etc errors led me to think the reason i'm seeing this login prompt is because of the readonly issue
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kilobyte >
Ubuntu insists on systemd which is one big fat regression; you'd need to make it happy somehow
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<
kilobyte >
you can create /etc/machine-id from another machine
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kilobyte >
mount the SD card in a card reader, write the file
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<
parco >
just stick any old number in there?
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kilobyte >
I think anything should work, yeah -- if it's 16 bytes (32 hex digits)
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<
kilobyte >
or, alternatively, if you can conveniently append to kernel boot line (like, interactively in u-boot), you can make / rw
01:49
<
kilobyte >
either via rootflags, or via init=/bin/bash
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<
kilobyte >
with bash you can remount /, do whatever setup you want, and only then "exec /sbin/init"
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<
parco >
that did the trick!
01:55
<
parco >
Dang, still can't get passed this login primpt
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<
kilobyte >
did you use a card reader, or appended to kernel boot args?
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<
parco >
the card reader technique
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parco >
ahh i think this prompt is a result of me using a rootfs from LinuxContainers
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<
parco >
LXC == LinuxContainer ..?
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<
kilobyte >
if the former, you can chroot to what you mounted. If your big machine has a different arch (amd64 I guess), you'd need to install qemu-user-static first.
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<
kilobyte >
I mean, chroot then change the password
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<
kilobyte >
copying a known value to /etc/shadow would also work
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<
kilobyte >
(I'm assuming you don't know the password)
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<
parco >
i wonder if i have the ability to make changes to the wiki at linux-sunxi.org... it's overall awesome, just a couple things could be sorted
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<
wens >
parco: register an account, come back to IRC to have your account "enabled", then you can edit
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<
silviop >
does exist modern allwinnet tablet full supported by U-boot/linux sunxi ? (like A64 tablet onda V80 SE)
11:32
<
silviop >
I want change my A31s tablet (that work like charm with linux-sunxi/uboot and xubuntu)
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<
Nemo_bis >
ciao silviop
12:09
<
paulk-leonov >
silviop, I have a V80 SE and I'm looking to port mainline to it
12:10
<
paulk-leonov >
The DSI panel might be a bit tricky
12:10
<
paulk-leonov >
help to the support is welcome :)
12:11
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12:11
<
silviop >
Mripard says me that you need panel initialization commands in mpidsi
12:12
<
silviop >
so i suppose there is a way to extract from android and to put in dtb or firmware folder
12:13
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12:15
<
silviop >
u-boot does not support MPI-DSI(not support dual channel lvds too!!!) or is back-ported from kernel ?
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<
vicpt >
I have built u-boot from source (according to wiki instructions) for an a33 tablet board, installed it to a sdcard to then boot a linux image from sdcard.
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12:47
<
vicpt >
Tried and it boot as expected. The problem is when I try to boot the OS with a keyboard (or any other usb device) attached via usb otg cable, it refuses to boot and reset the cpu over and over again.
12:49
<
vicpt >
I have almost no info since it immediately resets, any ideas about what can be causing this?
12:50
<
paulk-leonov >
silviop, yeah I'm confident about extracting the commands
12:51
<
paulk-leonov >
silviop, and it goes directly in a driver, it's neither hardware description nor a firmware but an init sequence
12:51
<
paulk-leonov >
silviop, no native DSI support in u-boot as far as I know
12:53
<
silviop >
vicpt what version of uboot ?
12:54
<
vicpt >
I have built it few days ago
12:54
<
vicpt >
let me check
12:54
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12:55
<
silviop >
I have a three A33 q8 tablet , but you reboot in kernel stage or in uboot stage ?
12:56
<
silviop >
mripard do you fell you will backport MPIDSI support to uboot ?
12:57
<
mripard >
I don't plan to work on it, no
12:58
<
vicpt >
<silviop> 2018.09-rc2
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12:59
<
silviop >
vicpt do you see any output or only reboot ?
13:00
<
vicpt >
silbio I'm not exactly sure about what you are asking but I think I'm boot in uboot
13:00
<
vicpt >
I can see output, in fact I can even stop the boot process
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13:00
<
vicpt >
and use the keyboard
13:01
<
silviop >
ok so you can edit uboot command line , so is kernel that reboot ?
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13:01
<
vicpt >
I think yes
13:01
<
vicpt >
its very quick
13:01
<
vicpt >
I'm not sure if it is uboot yes doing something
13:01
<
vicpt >
or if it is in kernel stage
13:02
<
vicpt >
I'm having output via lcd screen
13:02
<
silviop >
you read output from serial port or display ?
13:02
<
vicpt >
because I have no idea about serial pinout on this board
13:03
<
silviop >
do you know board model ?
13:03
<
vicpt >
It was a tablet one day
13:03
<
vicpt >
now it is just a board and the lcd
13:03
<
vicpt >
let me check the board for some references
13:04
<
vicpt >
Its not much but is what I get: M86_MB V2.0
13:05
<
vicpt >
printed on board...
13:05
<
DonkeyHotei >
i have such a tablet atm
13:05
<
DonkeyHotei >
oh, yours says v2.0
13:05
<
vicpt >
<DonkeyHotei> Its the same board model?
13:05
<
vicpt >
yes its 2.0
13:06
<
vicpt >
not the 1.0 version
13:06
<
mripard >
vicpt: there's a bug currently in the USB code, the PR has been sent today
13:06
<
silviop >
mripard: uboot or kernel code ?
13:06
<
vicpt >
<mripard> Ohh that explains it
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13:09
<
DonkeyHotei >
mripard: kernel, or u-boot?
13:09
<
vicpt >
btw without any usb device connected I can boot normally without any problems
13:09
<
vicpt >
but since I have no idea about the serial pinout on this board I can't do nothing
13:10
<
silviop >
tablet share serial with sd card you cannot do anything
13:10
<
DonkeyHotei >
you could use an sd breakout, but you'd need to change fex/dtb
13:11
<
vicpt >
any info on wiki about it?
13:11
<
silviop >
if uboot work and support lcd is better to start from uboot to debug
13:11
<
mripard >
silviop: DonkeyHotei: hu?
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13:12
<
silviop >
mripard bug is in uboot or in kernel ? Is not clear
13:12
<
DonkeyHotei >
mripard: the PR -- for u-boot, or the kernel?
13:13
<
mripard >
well, vicpt was talking about U-Boot
13:13
<
vicpt >
still I'm not sure about what is going on since it is to fast read
13:13
<
vicpt >
need to try get a picture or something
13:14
<
silviop >
vicpt make a video and play slow , sometimes help me
13:14
<
DonkeyHotei >
do you have a link to the PR directly?
13:14
<
vicpt >
Still if I press some key to stop the boot process I can enter in uboot shell
13:14
<
vicpt >
and run commands with the keyboard
13:14
<
silviop >
ok so uboot work!! Great
13:15
<
vicpt >
will try to get some pictures to try understand the output during the reset
13:15
<
pgreco >
do you prefer a r40-v40-common ?
13:17
<
silviop >
you can use older kernel , 4.14 should be fine i use on my a33 tablets
13:17
<
silviop >
and in kernel you can add delay in boot process
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13:27
<
mripard >
pgreco: I don't really see the point to merge both actually
13:28
<
pgreco >
mripard, mainly sync
13:28
<
pgreco >
it could just be a patch to update m2berry to m2ultra level
13:29
<
wens >
just updating them would be fine
13:30
<
pgreco >
ack, thanks
13:30
<
vicpt >
I have some output captured in pictures
13:30
<
vicpt >
If anyone want to take a look
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13:31
<
vicpt >
The pictures are not perfect but it was what I could get
13:31
<
vicpt >
its very tricky to get pictures in that exact moment since it resets very quickly
13:36
<
silviop >
can you show boot.cmd
13:36
<
wens >
vicpt: use the latest master from u-boot-sunxi (u-boot custodian repo), and use older toolchains
13:37
<
wens >
vicpt: gcc 6 / binutils 2.30
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<
vicpt >
<silviop> I have a already compiled boot.scr and it is in the sdcard
13:41
<
vicpt >
If I'm not wrong it was built according to wiki instructions
13:41
<
vicpt >
for mainline kernel
13:43
<
vicpt >
<wens> I was using the mainline u-boot
13:44
<
vicpt >
<wens> will try the u-boot-sunxi
13:44
<
silviop >
do you have put all debug features in kernel (CONFIG_EARLY_PRINTK) ?
13:44
<
vicpt >
I don't have the my configs here anymore
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<
vicpt >
and I don't remember
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<
vicpt >
I will try to build it again
13:45
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13:45
<
vicpt >
but if its not a standard debug config, I probably did not
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<
vicpt >
<wens> do you know any older toolchain already compiled for x86_64 ?
13:49
<
silviop >
May be power supply related ? We analize software but he say that only change is a USB keyboard that i suppose is powered from battery
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13:50
<
vicpt >
<silviop> Exactly, it was first thing I thought
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13:50
<
vicpt >
<silviop> And yes its been powered by battery
13:52
<
vicpt >
but if I boot it in android mode, it boot correctly without any problems with the keyboard attached
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<
vicpt >
Will try build u-boot-sunxi and sunxi-3.4 kernel and see what I can get...
14:07
<
vicpt >
<wens> Thank you
14:08
<
vicpt >
<wens> What version do you recommend?
14:09
<
wens >
7.x might or might not work
14:09
<
vicpt >
will try 6.4 from 2018.05
14:10
<
vicpt >
or is it so much new?
14:11
<
vicpt >
nevermind I will se by myself ;)
14:12
<
silviop >
A33 tablet with 1Gb of RAM ?
14:12
<
silviop >
Quite unusual
14:12
<
vicpt >
<silviop> yes
14:12
<
silviop >
can you post a photo of pcb
14:12
<
vicpt >
its not a tablet anymore
14:13
<
vicpt >
I just have board plus the lcd
14:13
<
silviop >
PCB means board
14:13
<
vicpt >
in fact it means printed circuit board
14:13
<
vicpt >
I know what you mean
14:14
<
vicpt >
give me few minutes and I will
14:15
<
vicpt >
I'm just preparing things to build uboot and kernel again
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<
vicpt >
<silviop> Just a correction, when you asked me about u-boot version I told you I have compiled from linux-sunxi sources in fact it wasn't from there it was from official u-boot repo
http://git.denx.de/
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<
vicpt >
I was using both u-boot and kernel both from mainline not sunxi legacy
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<
vicpt >
now I will try build from linux-sunxi repos
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15:14
<
wens >
there is no reason to try legacy
15:14
<
wens >
all u-boot progress is in upstream u-boot
15:15
<
vicpt >
<wens> Thanks
15:16
<
vicpt >
<wens> Will clone from there then
15:16
<
vicpt >
this time with gcc 6.4
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<
vagrantc >
"all u-boot progress is in upstream u-boot" ... such a beautiful thing to hear
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<
vicpt >
Now it boots with usb devices attached
15:43
<
vicpt >
although the keyboard is not recognized by the OS but this is another story...
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<
vicpt >
gonna try new kernel and see if it boots
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<
vicpt >
now seems after booting the kernel I stop to have power in otg usb
17:33
<
vicpt >
During u-boot stage usb device keyboard is detected, and I can use it normally in u-boot shell
17:34
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17:36
<
vicpt >
but if it proceeds to kernel booting, seems usb stop working (apparently it stops powering the usb)
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<
vicpt >
the board is being powered by battery, since it has only a usb port I can't charge it while using the otg cable
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<
vicpt >
no idea what can be causing this issue, need to try powering the usb externally or something...
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18:35
<
vicpt >
wens: I have noticed that sunxi-3.4 (stable) kernel hasn't a default config for A33 (sun8i)
18:37
<
vicpt >
wens: Do you know any branch of sunxi-3.4 kernel with A33 support?
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<
vicpt >
apparently sunxi-next branch has, but it is basically a fork of mainline
18:47
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18:49
<
vicpt >
will try build sunxi-3.4 stable for sun7i and see if it boots
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18:56
<
DonkeyHotei >
3.4 on A33 does not really work
18:57
<
vicpt >
DonkeyHotei: Thanks to save my time
18:59
<
vicpt >
Well I have no idea what can be causing such issue so for now I will give up
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19:19
<
vicpt >
ohh while checking sunxi default config for mainline kernel I have noticed that usb otg support is not enabled by default
19:20
<
vicpt >
I'm gonna generate new config with otg support enabled and build new kernel
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<
silviop >
you must put in dtb only host option on usb , i never found how to work OTG in linux-sunxi
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21:12
<
silviop >
in mainline kernel
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21:13
<
vicpt >
silviop: Hi and welcome back
21:14
<
vicpt >
silviop: but what about mainline kernel, can you use otg in your a33 tablets?
21:16
<
silviop >
Never used OTG, only usb HOST mode
21:17
<
vicpt >
I think I have read something about it in wiki
21:17
<
vicpt >
but it was for linux-sunxi kernel
21:17
<
vicpt >
do you know how to configure it in mainline kernel?
21:18
<
silviop >
there is some incompatibilities in tablet wiring
21:19
<
silviop >
you have to add in usb node in sun8i-a33-q8-tablet.dts and specify usb host only
21:19
<
vicpt >
says something about configuring kernel to do host only
21:20
<
vicpt >
but it is for sunxi-3.4 kernel
21:20
<
vicpt >
oh thank you
21:20
<
vicpt >
I will do it in my next build (I'm building a different one right now)
21:21
<
vicpt >
btw silviop I did upload the board pictures you requested...
21:22
<
silviop >
i don't remeber if usb port is usb0 or usb1
21:22
<
silviop >
node in dts
21:23
<
vicpt >
I have removed the pictures meanwhile, but if you are interested I can reupload again
21:24
<
vicpt >
about the dts I will give it a look
21:26
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silviop >
&usb_otg { dr_mode = "host";status = "okay";
21:27
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silviop >
something like this
21:27
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vicpt >
silviop: thanks
21:27
<
silviop >
i dont' remeber if is usb0 usb1 or usb_otg
21:27
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vicpt >
will edit it
21:28
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silviop >
you can add it in yout tablet dts , not edit dtsi!!
21:29
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vicpt >
do I need any extra reference to port number?
21:30
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21:30
<
silviop >
usb0 usb1 usb_otg are only labels , they are difined in dtsi files
21:31
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21:31
<
silviop >
they are nodes with properties that are passed to MUSB driver
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21:32
<
silviop >
the property dr_mode say to MUSB to not use the port as otg but only as master
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21:34
<
vicpt >
exactly, now I see, its defined in sun8i-a33.dtsi
21:34
<
vicpt >
gonna edit my .dts and try build it again
21:39
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vicpt >
brb going to a new round :P
21:40
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silviop >
i suppose you only need to add two lines at the end of your dts
21:42
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vicpt >
well according to my own indentation 4
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silviop >
let we know
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