ARM for ubuntu.docx

ARM for ubuntu.docx

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ARMforubuntu

So,thiswasquiteabitmorelengthythanIhoped.Nevertheless,Ithinkthisisworthsharing.ImadeallthiswithmyoldtrustynetbookandtheBBBconnectedviaHDMItoanexternalmonitor（theoretically,youcouldcreateascripttosetupeverythingforyou,butIdon'tknowhowtodothat...yet）,andcoupledwithitsownkeyboardandmousethefirsttime,thenIrealizedIcouldhaveusedSSHfromtheverybeginning（howdullofme）controllingtheBBBwithmycomputer.Youwillalsoneedafastmicrosdcard,4GBattheveryleast（and32GBatmost,Istronglyrecommendatleast8gb,class10）tosetupUbuntuARM.Toinstallthings,aninternetconnectionisrequired.YoucoulduseanEthernetcable,butpersonallyIhadaccesstoaUSB-StickWirelessNetworkAdapterbyCISCO/Linksysthatworkedrightaway.

Inshort,makesureyouhavethefollowing:

IfyouaregoingtouseSSH:

4GB（ormore,Irecommend8gbclass10）SDcard（andthesdcardreaderfortheimaginginyourPCwithUbuntu）

EthernetCable（orWifiUSBadapter）andinternetconnection

Plentyoftimeandpatience（timebeingthemostimportant,Iwarnyou）

IfyouwantgraphicaloutputfromtheBBB,tocontrolit"directly",add:

MicroHDMIcable（andtheHDMIMonitororTV,ofcourse）

USBHub（connectedtotheBBB）

Keyboard（inthehub）

Mouse（Ifyouwishtousethegraphicalenvironmentrightaway.Iusedawirelessonewithoutproblem,connectittothehub）

So,letsbeginwiththis.ThereisanalternativewaytoinstallROS,usingAngstrom,coveredbyVictorMayoralVilches（don'tknowhim）,onhisblog:

.Ihavenottriedit,butwilldosometime.

1.-Preparethesdcardforimaging

Modifiedfromhttp:

//elinux.org/BeagleBoardUbuntu

Using:

"Method1:

DownloadaCompletePre-ConfiguredImage",downloadapremadeimageofQuantal12.10armhf.12.10beingimportant,asitisthelatestUbuntuversionsupportedbyROS.

Inmycase,Iextractedthefilesforubuntu-12.10-console-armhf-2013-07-22.Becarefulwhenimagingthecard,youmustbeabsolutelysurethatthesdXyouareusingistheRIGHTone（orrisktrashingyourcomputerdata）.Positionyourselfviatheterminalinsidethefolderoftheextractedpremadeimageandenter:

sudo./setup_sdcard.sh--probe-mmc

Thisshowedmethatmysdcardwasinsdb,then,Iused:

sudo./setup_sdcard.sh--mmc/dev/sdb--ubootbone_dtb

Whenfinished,justputtheSDcardintheslotoftheBBB,andpoweritonwiththeUSBCableandyourPC.Thedefaultuserisubuntuandthepassistemppwd

2.-ConfigureSSH

Ifforsomereasonyouneedspecialconfiguration,do:

OntheBBB,enterintheterminalorcommandline:

sudonano/etc/ssh/sshd_config

AndfollowtheinstructionsoftheConfigurationsectionofbutLEAVEtheportas22.Thendo:

sudo/etc/init.d/sshrestart

Ifyoudonotneedspecialconfiguration,justdo:

OnyourPC,gotohttp:

//beagleboard.org/Getting%20Startedandlookformkudevrule.sh.Downloadit,makethefileexecutableandrunitwithsudo.Seeifneeded,andthenreboot.

MakesureyouareconnectedtothenetworkcreatedbytheBBBviatheUSBcable,inmycase,it'snamed"Wiredconnection2"andappearsasanEthernetNetwork（CircuitcoBeagleBoneBlack）.Youcouldsetupthenetworkmanuallyifneeded,likeinbutIfounditunnecessary（also,don'tfollowtheinstructionsinthatlink,it'sfortheRaspberryPiandFedora）.

Ifsuccesful,youshouldbeabletodo:

ping192.168.7.1

ping192.168.7.2

AndgetaresponsefromtheBBB.OnyourPC,updatethe/etc/hosts（sudonanoblablabla）file,addingtheline:

192.168.7.2arm

tothelistofknownhosts.YoushouldhavetheSSHserverandclientinstalledalready,ifindoubt,see.Thus,youcouldnowdo:

pingarm

OnyourPC（youmayneedtorebootitagain,Idon'treallyremember）,enterinaterminal:

sudoufwallow22

sshubuntu@arm

I'mnotsureifthefirstlineisreallyneccesary,seenin.

Thenenterthepasstemppwd,andyouwillbeconnectedviaSSHtotheBBB,viatheUSBcable.Ifworriedaboutsecurity,see.

3.-Configurethewifiadapter（ifnotusingethernet）

Ifyoudon'tmind,youcanconnecttotheBBBviaSSHrightaway,anddoeverythingonyourcomputer,seestep1ifyouneedtoconfiguretheSSHconnectionfromtheBBBitself.IsuggestusingSSHsoyoudon'thavetobotherwithHDMI,keyboard,etc.YouneedtosetupthehostsfileonyourcomputersoitincludestheBBBipandnamekey-valuepair,and"install"thedriverscriptfromtheBBBwebpage.

TheBBBwillaskyouforalogin,enterubuntu（theuser）andthethepasswordtemppwd.Youarenowatubuntu@arm.Inthesectionnamed"UbuntuSoftware"athttp:

//elinux.org/BeagleBoardUbuntuthereisanexampleoftheinterfaceconfigurationfile（seehttp:

//ubuntuforums.org/showthread.php?

t=202834formoredetail）.Iused:

sudonano/etc/network/interfaces

Inmycase,IhadaWPA-2publicssidAESencryptedpersonalDHCPnetwork,thusaftertheWifiExamplecommentsIentered:

autowlan0

ifacewlan0inetdhcp

wpa-driverwext

wpa-ssidINFINITUM1234

wpa-ap-scan1

wpa-protoRSN

wpa-pairwiseCCMP

wpa-groupCCMP

wpa-key-mgmtWPA-PSK

wpa-psk...

Again,seehttp:

//ubuntuforums.org/showthread.php?

t=202834formoredetails.INFINITUM1234beingthenameofmywirelessnetwork.Togetthepassphrase,exitnano（savingchanges）andenterintheterminal:

wpa_passphraseyour_essidyour_ascii_key

Letssay（asanexample）thatIused:

wpa_passphraseINFINITUM12341234567890

Writedown（ifnotusingSSH,sorryforthat...butyoucouldjustuseSSH,orEthernetyouknow,orfinishthislaterwithaGUI）thelongstringoflettersandnumbersgeneratedafterpsk,andupdatethewpa-psklinein/etc/network/interfaceswiththestring.Finally,reboot:

sudoreboot

4.-Configurethekeyboardlayout（ifyoursisnotUSstandardandyouareusingtheBBB"directly"）

IusedaSpanish（Spain）keyboard.Toconfigureit,followtheinstructionsat

sudoapt-getupdate

sudoapt-getinstallconsole-data

Hitenterwhenshowed"Configuringconsole-data",andthenuse:

sudodpkg-reconfigurekeyboard-configuration

Selectanappropriatekeyboardandthedesiredlanguage.Leaveotheroptionsunchanged.

5.-StarttheGraphicalEnvironment（ifsoyouwish）

Sameuserasubuntuandpassastemppwd.Refertohttp:

//elinux.org/BeagleBoardUbuntuunderthesubsection"Raring13.04armhf".Positionyourselfinside/boot/uboot/tools/ubuntu/（notreallyreallyneeded）andrunthescriptsmall-lxde-desktop.shwithsudo:

cd/boot/uboot/tools/ubuntu/

sudo./small-lxde-desktop.sh

Willtakeawhile,around30minutesforme.Thenreboot.Useagainubuntuasuserandtemppwdaspassword.Forsomereasonthemousewillbe"hidden"eventhoughtit'sstillthere.YoucanaccessaterminalinStart/System_Tools/XTerm

IfyouwantLubuntu（thecorepart,installappslater）,youwillneedan8gbcardorbigger,use:

sudoapt-getupdate

sudoapt-getinstalllubuntu-core

Thiswilltake1-2hourstofinish.

6.-ConfigureTightVNC

IusedVinagre（RemoteDesktopViewer）onmylaptopwithUbuntu13.04.Iinstalleditviathesoftwarecenter.

Wewilluseavariationof.OntheBBB（eitherdirectlyonitorviaSSH,IpreferSSH）,enterinaterminalorcommandline:

sudoapt-getupdate

sudoapt-getinstallaptitude

sudoaptitudeinstalltightvncserver

tightvncserver:

1

I（maybefoolishly,butwhatever）puttemppwdasthepasswordforVNCtoo.Donotcreateaview-onlypassword.Then,ontheBBB:

tightvncserver-kill:

1

nano~/.vnc/xstartup

AndaddthislineattheendofthefileifusingsmallLXDE:

lxterminal&/usr/bin/lxsession-sLXDE&

IfusingLubuntu,erasetheline/etc/X11/Xsession,andadd:

/usr/bin/startlubuntu&

Again,ontheBBB:

tightvncserver:

1

Starttheremotedesktopviewer,andconnectviaVNCto192.168.7.2:

1,enterthepasstemppwd,andyouwillgettheremotedesktop.Youcanchangetheresolution,ontheBBB:

tightvncserver-kill:

1

tightvncserver:

1-geometry800x600-depth16-pixelformatrgb565:

AndconnectagainwithRemoteDesktopViewer.That'sallforthebasics.Asyoumaysee,thethemedoesnotbehaveswellrightnow,don'tknowhowtofixit,butitseemsperfectlyusable,ifbarebones.Personally,IthinkthatyoushouldusetheVNCasalastresort,asit'sheavyandresourceconsuming.Killtheserverwhenfinished:

tightvncserver-kill:

1

ToruntheVNCattheBBBstartupwithsmallLXDE,doontheBBB:

sudonano/etc/init.d/tightvncserver

Andcopyandpaste（takenfrom）:

#!

/bin/sh

###BEGININITINFO

#Provides:

tightvncserver

#Required-Start:

$local_fs

#Required-Stop:

$local_fs

#Default-Start:

2345

#Default-Stop:

016

#Short-Description:

Start/stoptightvncserver

###ENDINITINFO#Moredetailssee:

#Customizethisentry

#SettheUSERvariabletothenameoftheusertostarttightvncserverunder