[Guida]v2 SnowLeopard 32/64bit 10.6.7Vanilla. PERFETTA e SEMPLICISSIMA! NO DISABLER! AGG:23.03.11

[Mac Gyver]

ok to srax: check your pm box i've sent you the file.

 

and for the heat temp i've already used voodoomini with the E5200 but i get 10°c more than with NullCpuManagement. i had (under istat) around 37°c with NullCPU.... and 48°c with voodoomini.

 

now i run a Q6600 (stepping G0) @3,16 rock stable but idle at 52°C while only typing this text.

and 75°c when running 3 geekbench 1 xbench a bluray and google earth together (yeah i wasn't able to found a better bench).

 

i'm asking me if for some reasons voodoomini should work better certain type of cpu and nullcpu for some others.

[nikeita]

ok to srax: check your pm box i've sent you the file.

 

and for the heat temp i've already used voodoomini with the E5200 but i get 10°c more than with NullCpuManagement. i had (under istat) around 37°c with NullCPU.... and 48°c with voodoomini.

 

now i run a Q6600 (stepping G0) @3,16 rock stable but idle at 52°C while only typing this text.

and 75°c when running 3 geekbench 1 xbench a bluray and google earth together (yeah i wasn't able to found a better bench).

 

i'm asking me if for some reasons voodoomini should work better certain type of cpu and nullcpu for some others.

 

 

WHAT?! i have a q6600 @3.0Ghz with stock fan and idling at 75°C - 80°C ...i'm using vodoopowermini.kext and scrax dsl.

 

maybe something is wrong on my system, how can i improve this?

thx any welcome appreciated.

[bbeepp]

Hi

 

I've tried your latest dsdt file from your guide "http://www.insanelymac.com/forum/index.php?showtopic=194759" and computer does not shutdown. I've beeen using you previous dsdt and with it works. I don't know why and what happend. Everything else is workign great (sleep, all devices etc.).

 

I'll attach both files -> Archive.zip

 

Cheers.

[scrax]

per le temperature ho già usato voodoopowermini con il E5200 ma ho 10°di più che con NullCpuManagemente. Arrivavo ai 37°c con NullCPU.... e 48°c con voodoomini.

 

adesso ho un Q6600 (stepping G0) @3,16 bello stabile ma in idle fa 52°C scrivendo solo questo testo.

e 75°c quando carico 3 geekbench 1 xbench un bluray e google earth assieme (yeah i wasn't able to found a better bench).

 

mi domando se per qualche ragione voodoomini può funzionare meglio per certi tipi di CPU e nullcpu per altre.

Archivio.zip

ive added to your dsdt:

// part to inject proprieties
Method (DTGP, 5, NotSerialized)            // ADDED FOR AUDIO from this line here...
   {
       If (LEqual (Arg0, Buffer (0x10)
               {
                   /* 0000 */    0xC6, 0xB7, 0xB5, 0xA0, 0x18, 0x13, 0x1C, 0x44, 
                   /* 0008 */    0xB0, 0xC9, 0xFE, 0x69, 0x5E, 0xAF, 0x94, 0x9B
               }))
       {
           If (LEqual (Arg1, One))
           {
               If (LEqual (Arg2, Zero))
               {
                   Store (Buffer (One)
                       {
                           0x03
                       }, Arg4)
                   Return (One)
               }

               If (LEqual (Arg2, One))
               {
                   Return (One)
               }
           }
       }

       Store (Buffer (One)
           {
               0x00
           }, Arg4)
       Return (Zero)
   }                                         // ADDED FOR AUDIO   .....to this line here.

//part for audio injection


           Device (HDEF)                              // ADDED FOR AUDIO from this line here...
           {
               Name (_ADR, 0x001B0000)
               Name (_PRW, Package (0x02)
               {
                   0x0D, 
                   0x06
               })
               OperationRegion (HDCS, PCI_Config, 0x54, 0x04)
               Field (HDCS, DWordAcc, NoLock, Preserve)
               {
                       ,   15, 
                   PMES,   1
               }

               Method (_DSM, 4, NotSerialized)
               {
                   Store (Package (0x06)
                       {
                           "built-in", 
                           Buffer (One)
                           {
                               0x00
                           }, 

                           "layout-id", 
                           Buffer (0x04)
                           {
                               0x73, 0x03, 0x00, 0x00
                           }, 

                           "PinConfigurations", 
                           Buffer (Zero) {}
                       }, Local0)
                   DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                   Return (Local0)
               }
           }                                            // ADDED FOR AUDIO ...to this line here.

[scrax]

Ho provato il tuo ultimo file dalla guida "http://www.insanelymac.com/forum/index.php?showtopic=194759" e il computer non si spegne. Stavo usando il tuo precedente dsdt e quello funziona. Non so come mai sia successo. Tutto il resto funziona alla grande (sleep, all devices etc.).

Allego entrambi i file -> Archive.zip

 

the dsdt that gives you problem is a really minimal one, so maybe something is missing, i've trye to make some little modification but it's a long work to spot what is wrong, so if you can you could try to check with filemerge (installed with xcode) the difference from your working dsdt and the other and try to add the missing code in little step to se what is the code you need for a full working shutdown.

dsdt_shutdown_problem_Edit.dsl.zip

 

Note: If the previous one works, you can safely keep that (there are no emprovement in the last only some code reduction).

 

il dsdt che ti da problemi è veramente minimale, quindi forse qualcosa manca, ho provato a far alcune piccole modifiche ma è un lavoro lungo per capire cosa nonva, quindi se puoi provare a vedere le differenze con filemerge (installato con xcode) tra il dsdt funzionante e l'altro aggiungendo il codice mancante a pezzi in modo da capire qual'è il codice che ti serve per il completo spegnimento.

 

Nota: Se quello precedente funziona, puoi tranquilamente tenere quello (non ci sono migliorie nell'ultimo, solo riduzioni di codice)

[Mac Gyver]

@ scrax: still no audio. but,

 

now i can see in "about this mac" all my outputs and ALC883 etc ....

 

1- i've used the audio Kext in your signature maybe it outdated ...

2- i've put the dsdt.aml in EXTRA folder and it seems to be ok (because "about this mac)

3- in the bios i've tried both setting between HDA audio & AC97 but same ....

 

 

so now i'll try other kexts untill i'll found the right one.

 

to nikeita:

 

fisrt of all you must be sure your Q6600 is a stepping G0 and not a B3

after that check in your bios if the cpuvcore is set on auto try to fix it at 1,3000

sometimes some mobo may increase too much the vcore and it result in cpu heat.

(the G0 stepping is known to run cooler than the B3).

 

anyway the best thing to do before is to bench for 10 min your system then reboot go into the bios and chack the CPU temp in PC HEALTH this one is much more reliable.

like me you should try NullcpupowNullCPUPowerManagement instead of voodoomini if you still

get high temperatures.

[bbeepp]

...

and for the heat temp i've already used voodoomini with the E5200 but i get 10°c more than with NullCpuManagement. i had (under istat) around 37°c with NullCPU.... and 48°c with voodoomini.

 

now i run a Q6600 (stepping G0) @3,16 rock stable but idle at 52°C while only typing this text.

and 75°c when running 3 geekbench 1 xbench a bluray and google earth together (yeah i wasn't able to found a better bench).

 

i'm asking me if for some reasons voodoomini should work better certain type of cpu and nullcpu for some others.

 

Try this last_working_dsdt.aml.zip dsdt file. It works great on my system. The cpu has defined 4 pstates up to 3GHz. I have the same CPU and motherboard.

[scrax]

@ scrax: ancora no audio. ma,

 

adesso posso vedere in "about this mac" tutti gli output e ALC883 etc ....

 

1- ho usato l'audio Kext nella tua firma forse vecchio ...

2- ho messo dsdt.aml in EXTRAe sembra ok (visto "about this mac)

3- in bios ho provato entrambe le impostazioni HDA audio & AC97 ma nulla ....

 

 

quindi proverò altri kext finchè non trovo uno che funziona.

 

you need to use the kext i attached in this post.

The one you use is good, is the AppleHDA.kext without unused code for a quicker bootup, but LegacyHDAPlatformDriver.kext is the kext needed to load audio.

devi usare quello allegato qualche post precedente. quello che usi va bene per ridurre il tempo di avvio ma LegacyHDAPlatformDriver.kext è quello necessario per caricare l'audio

[nikeita]

to nikeita:

 

fisrt of all you must be sure your Q6600 is a stepping G0 and not a B3

after that check in your bios if the cpuvcore is set on auto try to fix it at 1,3000

sometimes some mobo may increase too much the vcore and it result in cpu heat.

(the G0 stepping is known to run cooler than the B3).

 

anyway the best thing to do before is to bench for 10 min your system then reboot go into the bios and chack the CPU temp in PC HEALTH this one is much more reliable.

like me you should try NullcpupowNullCPUPowerManagement instead of voodoomini if you still

get high temperatures.

 

thank you Mac Gyver,

 

my Q6600 is a G0 stepping but lowering cpu vcore to 1,3000 crash my system (kernel panic or unable to boot)

i have an original P5KR (not modded)

 

also without VoodooPowermini.kext i don't have speedstep, restart/shutdown and also AppleHDA refuse to load.

getting those messages in console during boot:

 

26/02/10 23.44.57 kernel Sound assertion "0 == pathMap_aDriverInstance" failed in "/SourceCache/AppleHDA/AppleHDA-179.1.4/AppleHDA/AppleHDADriver.cpp" at line 1656 goto Exit

26/02/10 23.44.57 kernel Sound assertion "0 != createAudioEngines ( fPathMap_aDriverInstance )" failed in "/SourceCache/AppleHDA/AppleHDA-179.1.4/AppleHDA/AppleHDADriver.cpp" at line 203 goto Exit

 

maybe this can help you too.

[Mac Gyver]

realy intersting nikeita,

 

so it should be the reason why a getting troubles with my Audio (die to Nullcpu.....)

 

i'll try tha kexts of scrax to see if it works even with the NullCPU....kext

and the post the results.

 

for your vcore the best is to see in "pc health" what is the tension when idle and

try to fix it near this value or even higher tp prevent cpu charge (this way you'll not let it go much more higher)

[scrax]

26/02/10 23.44.57 kernel Sound assertion "0 == pathMap_aDriverInstance" failed in "/SourceCache/AppleHDA/AppleHDA-179.1.4/AppleHDA/AppleHDADriver.cpp" at line 1656 goto Exit

26/02/10 23.44.57 kernel Sound assertion "0 != createAudioEngines ( fPathMap_aDriverInstance )" failed in "/SourceCache/AppleHDA/AppleHDA-179.1.4/AppleHDA/AppleHDADriver.cpp" at line 203 goto Exit

 

 

This warning are not a problem, I have them if I run @ 64bit but audio still works.

questi avvisi non sono un problema, se carico a 64bit li ho anch'io ma l'audio funziona comunque

Hi

 

I've tried your latest dsdt file from your guide "http://www.insanelymac.com/forum/index.php?showtopic=194759" and computer does not shutdown. I've beeen using you previous dsdt and with it works. I don't know why and what happend. Everything else is workign great (sleep, all devices etc.).

 

I'll attach both files -> Archive.zip

 

Cheers.

 

 

What bootloader are you using? Actually shoutdown don't works also for me. i'll try to spot what is in the next days

I'm using the last build of chameleon 2RC5pre12 r118

 

EDIT: I've found the missing code: / ho trovato il codice mancante

Name (_PRW, Package (0x02) {0x0B,0x04}) //added for shutdown support / aggiunto per spegnimento

in:

				Device (FRWR){Name (_ADR, 0x05030000)
				Name (_GPE, 0x0A)
				Name (_PRW, Package (0x02) {0x0B,0x04})	   //added for shutdown support 
				Method (_DSM, 4, NotSerialized) {Store (Package (0x04) {
						"built-in",Buffer (One) {0x00}, ...etc...

 

Now shutdown works again. / adesso lo spegnimento funziona di nuovo

Here you are your dsdt with the missed code added.

New_dsdt_without_shutdown_problem.zip

[nikeita]

This warning are not a problem, I have them if I run @ 64bit but audio still works.

questi avvisi non sono un problema, se carico a 64bit li ho anch'io ma l'audio funziona comunque

 

 

 

What bootloader are you using? Actually shoutdown don't works also for me. i'll try to spot what is in the next days

I'm using the last build of chameleon 2RC5pre12 r118

 

EDIT: I've found the missing code: / ho trovato il codice mancante

Name (_PRW, Package (0x02) {0x0B,0x04}) //added for shutdown support / aggiunto per spegnimento

in:

				Device (FRWR){Name (_ADR, 0x05030000)
				Name (_GPE, 0x0A)
				Name (_PRW, Package (0x02) {0x0B,0x04})	   //added for shutdown support 
				Method (_DSM, 4, NotSerialized) {Store (Package (0x04) {
						"built-in",Buffer (One) {0x00}, ...etc...

 

Now shutdown works again. / adesso lo spegnimento funziona di nuovo

Here you are your dsdt with the missed code added.

New_dsdt_without_shutdown_problem.zip

 

 

scrax, my system run @32 bit and audio doesn't work because of those error messages without voodoopowermini (maybe affecting only 32 bit part of kext driver, i presume).

 

Mac Gyver, what you mean with "PC health" ?

[Mac Gyver]

scrax:

 

still nothing regarding audiochip with the kext you linked .

i think nikeita and i should get the same problem between NullCPU.... and voodoomini

as i get some other problems of shutdown-restart and DHCP so ... i'll probably try your entire installer.

 

nikeita:

 

sorry, i've misunderstood with my other mobo for PC HEALTH.

in your Bios go under "Power" and "Hardware monitor"

and then check cpu temp and vcore. those values are the real ones.

you 'll notice that the vcore is much lower to the one applied in the cpu settings if not on "Auto"

it is due to a vdroop. you can increase it to obtain a "real" 1,3500v max for a SLACR.

but check the "real temp " too.

 

for exemple my E5200 need to be set on 1,45 to obtain a real 1,35 (due to vdroop again)

but it's rock stable @ 3,69ghz and idle 38°C full 58°C under istat AND in bios (on a stock air quad cooler)

[scrax]

scrax:

 

ancora nulla per l'audio coi kext che hai linkato.

penso che nikeita ed io abbiamo lo stesso problema tra NullCPU.... e voodoomini

inoltre ho errori di spegnimento, quindi proverò tutto l'nstaller.

 

If you want to do a manual installation you need:

 

- Chameleon 2RC5preX (I'm using the last revision r118)

- my DSDT generic or with Speedstep value for your CPU in /Extra

. smbios.plist for your ram and processor, com.apple.Boot.plist with you boot preferences and your graphic EFI string

- in /Extra/Extensions or /S/L/E: fakesmc.kext and LegacyHDAPlatformDriver.kext, LegacyJMB36xSATA.kext

- in /System/Library/Extensions : JMicronATA.kext , Attansic1LEthernet.kext, voodoopowermini.kext (not needed with Speedstep code)

 

the installer puts all the kext in /S/L/E, in the installer you can find all the kext and the dsdt and some generic com.apple.boot.plist and smbios.plist

 

If you know how many p-state your CPU support I can help you in edit my dsdt for your CPU so you don't need anymore voodoopowermini and nullcpu...

[nikeita]

If you want to do a manual installation you need:

 

- Chameleon 2RC5preX (I'm using the last revision r118)

- my DSDT generic or with Speedstep value for your CPU in /Extra

. smbios.plist for your ram and processor, com.apple.Boot.plist with you boot preferences and your graphic EFI string

- in /Extra/Extensions or /S/L/E: fakesmc.kext and LegacyHDAPlatformDriver.kext, LegacyJMB36xSATA.kext

- in /System/Library/Extensions : JMicronATA.kext , Attansic1LEthernet.kext, voodoopowermini.kext (not needed with Speedstep code)

 

the installer puts all the kext in /S/L/E, in the installer you can find all the kext and the dsdt and some generic com.apple.boot.plist and smbios.plist

 

If you know how many p-state your CPU support I can help you in edit my dsdt for your CPU so you don't need anymore voodoopowermini and nullcpu...

 

scrax, i too have an Intel Q6600 (if you have time to post the same dsdt in previous post plus Q6600 pstates will be very appreciated).

I was able to get id of voodoopowermini and still get AppleHDA loaded and working without the console msgs errors mentioned in previous post (solution was, after removing the voodoo kext and pfix'ed need a first reboot with -x -f to get rid of console msgs errors in previous post, something still get cached i assume).

 

Also, the great part, i was able (removing voodoo) to make sleep partially working (for now only sleep, not able to resume but before this get pc freezed going in to sleep mode). a step forward

 

recap now after remove voodopowermini.kext:

 

- HD Audio ok (was ok before)

- reboot/shutdown doesn't work (was ok before)

- speedstep not enabled (working before)

- resume not working (neither sleep and resume working)

 

 

edit:

updated my dsdt with scrax dstd on post above with shutdown code, but not working.

reboot never happen, shutdown switch off only power led but cpu fan remain on ( have to powerdown with 4.sec power button)

thank you

 

 

edit2:

with that dsdt sleep/resume now work!! ! GREAT

[scrax]

edit:

updated my dsdt with scrax dstd on post above with shutdown code, but not working.

reboot never happen, shutdown switch off only power led but cpu fan remain on ( have to powerdown with 4.sec power button)

thank you

 

 

edit2:

with that dsdt sleep/resume now work!! ! GREAT

 

SO not working? shutdown?

can you post your kernel.log?

 

This is a DSDT for P5KR or P5K, P5KC with P5KRbios and Q6600 with 4 p-state

Here you are your dsdt with the missed code added.

New_dsdt_without_shutdown_problem.zip

 

it shoud work, but if not explain well what is not working, what kext in use etc...

[nikeita]

SO not working? shutdown?

can you post your kernel.log?

 

This is a DSDT for P5KR or P5K, P5KC with P5KRbios and Q6600 with 4 p-state

 

 

it shoud work, but if not explain well what is not working, what kext in use etc...

 

 

with this DSDT ( New_dsdt_without_shutdown_problem.zip ) speedstep , restart and shutdown doesn't work. sleep/resume is OK

 

now my only kext in fakesmc, natit.kext and modded ATI driver for my x1950GT

[bbeepp]

EDIT: I've found the missing code: / ho trovato il codice mancante

Name (_PRW, Package (0x02) {0x0B,0x04}) //added for shutdown support / aggiunto per spegnimento

in:

				Device (FRWR){Name (_ADR, 0x05030000)
				Name (_GPE, 0x0A)
				Name (_PRW, Package (0x02) {0x0B,0x04})	   //added for shutdown support 
				Method (_DSM, 4, NotSerialized) {Store (Package (0x04) {
						"built-in",Buffer (One) {0x00}, ...etc...

 

Now shutdown works again. / adesso lo spegnimento funziona di nuovo

Here you are your dsdt with the missed code added.

New_dsdt_without_shutdown_problem.zip

 

Thanks a lot!!! I was looking for missing code but I never thought it should be in firewire section.

[scrax]

con questo DSDT ( New_dsdt_without_shutdown_problem.zip ) speedstep , riavvio e spegnimento non funzionano. stop/riavvio è OK

 

ora gli unici kext in fakesmc, natit.kext e modificati ATI driver per la mia x1950GT

There is something that i don't understand, how could you Attansic work without any kext?

Please provide kernel.log , YOURMAC.ioreg , smbios.plist and com.apple.Boot.plist and a dump from kextstats typed in terminal, to check the difference with mine.

And last thing, what bootloader are you using?

c'è qualcosa che non capisco, come può funzionarti Attansic senza nessun kext?

Perpiacere posta kernel.log , ILTUOMAC.ioreg , smbios.plist , com.apple.Boot.plist e un dump da kextstats scritto in terminal, per verificare le differenze con i miei.

E un'ultima cosa, che bootloader usi?

 

Grazie mille!!! Stavo cercando il codice mancante e non avrei mai pensato potesse essere nella sezione della firewire.

Thank's to you for your report, I was thinking it was a bootloader problem before reading your post.

Grazie a te per la segnalazione, pensavo fosse un problema di bootloader prima di leggere il tuo post.

[Broll]

Grazie Sono riuscito a farlo nel pc di un mio amico Nel mio ho ancora qualche problema XD

[nikeita]

There is something that i don't understand, how could you Attansic work without any kext?

Please provide kernel.log , YOURMAC.ioreg , smbios.plist and com.apple.Boot.plist and a dump from kextstats typed in terminal, to check the difference with mine.

And last thing, what bootloader are you using?

c'è qualcosa che non capisco, come può funzionarti Attansic senza nessun kext?

Perpiacere posta kernel.log , ILTUOMAC.ioreg , smbios.plist , com.apple.Boot.plist e un dump da kextstats scritto in terminal, per verificare le differenze con i miei.

E un'ultima cosa, che bootloader usi?

 

 

Thank's to you for your report, I was thinking it was a bootloader problem before reading your post.

Grazie a te per la segnalazione, pensavo fosse un problema di bootloader prima di leggere il tuo post.

 

 

i disabled Attansic in bios because the kext is not capable to resume after stadby ( with load/unload kext script sometime stop working alltogheter) i'm using a 3c509x pci nic card.

my bootloader is Chameleon-2.0-RC4-r684-bin

 

this is my kextstat:

 

Jupiter:~ user$ kextstat | grep -v com.apple

 

Index Refs Address Size Wired Name (Version) <Linked Against>

32 0 0x550eb000 0x4000 0x3000 org.netkas.fakesmc (2) <13 7 4 3>

104 0 0x5cec4000 0xd4000 0xd3000 com.vmware.kext.vmx86 (3.0.0) <11 5 4 3 1>

105 0 0x5c882000 0xc000 0xb000 com.vmware.kext.vmci (3.0.0) <5 4 3 1>

106 0 0x5c9e9000 0x6000 0x5000 com.vmware.kext.vmioplug (3.0.0) <33 29 5 4 3 1>

107 0 0x5c9ef000 0xa000 0x9000 com.vmware.kext.vmnet (3.0.0) <5 4 3 1>

Jupiter:~ user$

 

 

how to produce ioreg? also u need the entire kernel.log?

bye

 

follow are plist files you requested me.

new.zip

 

 

 

 

ps.

 

removing voodoopowermini.kext now CPU temp is 20° more cool ( @3.0 Ghz now idle at 58°, before was 80° !!)

[bbeepp]

....

removing voodoopowermini.kext now CPU temp is 20� more cool ( @3.0 Ghz now idle at 58�, before was 80� !!)

 

Mine CPU at idle is around 40 degrees. Maybe you should invest in some better cooler

[nikeita]

Mine CPU at idle is around 40 degrees. Maybe you should invest in some better cooler

 

 

yes, sure

 

 

 

speedstep and shutdown/restart work for you with scrax DSDT ?

[scrax]

Attenzione: Nuovo kext per JMicron con il Legacy incluso, quindi riduciamo di un'altro kext i kext in uso

Attention: New kext for JMicron with the Legacy one included, so we don't need another kext anymore

JMicronATA.kext4JMB363.zip

Altro kext con Legacy integrato per l'audio e avvio più veloce / Another kext with Legacy integrated for audio and quick boot

AppleHDA.kext4P5K_P5KC_P5KR.zip

Per installarli usate kext helper b7 dopo aver cancellato /System/Library/Extensions/LegacyJMB36xSATA.kext e LegacyHDAPlatformDriver.kext che è finalmente inutile dopo l'integrazione nel jmicronATA e in AppleHDA

To install use kext helper b7 after deleting /System/Library/Extensions/LegacyJMB36xSATA.kext and LegacyHDAPlatformDriver.kext that are not needed anymore with the integration in JMicronATA and in AppleHDA

 

how to produce ioreg? also u need the entire kernel.log?

bye

 

Your plist are ok, i need just your last boot logged in kernel log

from: (DATE) localhost kernel[0]: npvhash=4095

to the last line just after loged in

 

the ioreg with DSDTSE "Reg Info" if i don't remember wrong opens IORegistryExplore fron there you can save it.

 

Are you sure that now speed step isn't working natively?

 

 

Grazie Sono riuscito a farlo nel pc di un mio amico Nel mio ho ancora qualche problema XD

Se la tua mobo ha bisogno di un bios moddato 99% puoi usare un dsdt.aml corretto per non flashare il bios, potresti chiedere a qualcuno che usa il bios modificato di passarti il loro dsdt che possono estrarre con DSDTSE.

[bbeepp]

speedstep and shutdown/restart work for you with scrax DSDT ?

 

Everything works fine on my primary system but yesterday shutdown stopped working :/ thats strange.

 

On my other disk where I installed test system (snow 10.6.2) shutdown works with the latest Scrax dsdt file.

On both systems I'm using official Chameleon RC4 with fakesmc, LegacyAppleHDAHardwareConfigDriver, LegacyHDAPlatformDriver and OSXRestart kexts installed in E/E.

 

I have to investigate