[KERNEL] 2.55 GHz overclock for SHIELD (need testers!)

[mta1981]

2.55 GHz overclock for SHIELD

Please help test this - while there is definitely a measurable improvement in performance, it is kind of inconsistent with the sort of increases I'd expect this clock speed to bring. I have been testing this for a few days, and I'm not quite sure whether this is due to the hardware reporting the wrong clock speeds on the relevant PLLs, an overgressive power management/dvfs quirk, or a bottleneck somewhere. I did have to track down a kernel bug preventing higher clocks that turned out to be an issue with NVIDIA using a signed long where they should have used an unsigned long.

Flashing:

0. Make sure you are on the current OTA.
1. Unlock your bootloader.
2. Test the kernel: fastboot boot boot-roth-oc.img
3. See if it crashes while booting. If it does, don't proceed to the next step, and post a reply below. Before you flash, verify that you're running my kernel by checking for "[email protected]" either in the Kernel Version field in About SHIELD, doing a cat /proc/version (in case you didn't see it crashing), or verifying the maximum CPU speed is 2550 MHz.
4. If all goes well, flash the kernel: fastboot flash boot boot-roth-oc.img

Note: This boot.img is insecure (ro.secure=0) for easier debugging. Userspace apps shouldn't work yet, so this boots at 2550 MHz.

As always, boot/flash this at your own risk, though this kernel doesn't raise voltages much.

Download: http://setcpu.com/boot-roth-oc.img
Relevant patches: https://github.com/coolbho3k/kernel-roth
Picture:

Mike

Any problems installing this with the current ota and rooted?

 

[nrage23]

Any problems installing this with the current ota and rooted?

It is not based on the latest OTA. You will lose WiFi.

 

[mta1981]

It is not based on the latest OTA. You will lose WiFi.

well thats a bummer, better of leaving it alone then

 

[twistedumbrella]

well thats a bummer, better of leaving it alone then

... Go back a page ... :/

 

[mta1981]

... Go back a page ... :/

Call me noob but I'm afraid I don't follow lol. I only know how to flash a kernel from a zip. If you're referring to "boot from it" I don't know what that means or how to do it lol

 

[bluecarbon]

Call me noob but I'm afraid I don't follow lol. I only know how to flash a kernel from a zip. If you're referring to "boot from it" I don't know what that means or how to do it lol

You can download "[root]recovery tools -flasher" from Play, and use that if you are not comfy with fast boot. Back up your boot in recovery, open the program, select flash kernel (not recovery), select "other from storage", and then navigate to the boot.IMG. I use it, not because I do not like using fastboot, but often it is more convenient.

Sent from my Nexus 7 using Tapatalk

---------- Post added at 10:40 PM ---------- Previous post was at 10:36 PM ----------

You can download "[root]recovery tools -flasher" from Play, and use that if you are not comfy with fast boot. Back up your boot in recovery, open the program, select flash kernel (not recovery), select "other from storage", and then navigate to the boot.IMG. I use it, not because I do not like using fastboot, but often it is more convenient.

PS, I've been using the boot.IMG for a few days now with no problems. I haven't messed with any settings yet though.

Sent from my Nexus 7 using Tapatalk

Sent from my Nexus 7 using Tapatalk

 

[mta1981]

You can download "[root]recovery tools -flasher" from Play, and use that if you are not comfy with fast boot. Back up your boot in recovery, open the program, select flash kernel (not recovery), select "other from storage", and then navigate to the boot.IMG. I use it, not because I do not like using fastboot, but often it is more convenient.

Sent from my Nexus 7 using Tapatalk

---------- Post added at 10:40 PM ---------- Previous post was at 10:36 PM ----------





Sent from my Nexus 7 using Tapatalk

sweet, thanks, I'll give it a shot after the weekend. I'll let you know how it comes out or ask for help if i blow it up lol

 

[twistedumbrella]

sweet, thanks, I'll give it a shot after the weekend. I'll let you know how it comes out or ask for help if i blow it up lol

I put it in a zip but that seemed to be unreliable at the time so it's safer to do it that way.

Once they add two more hours per day, I might finally get to making an updated kernel package. Blame 3d modeling for a "one project at a time" workflow :/

 

[rylen]

Just fixed the card, but it's the same image.

Thank you so much for this! Works on my Shield

Is there going to be further update on this? I hope so Thanks again.

 

[Shozuki]

Pardon my n00b.

I'm on the latest update. Will flashing this mean I lose WiFi?


Thanks and apologies!!

 

[twistedumbrella]

Pardon my n00b.

I'm on the latest update. Will flashing this mean I lose WiFi?


Thanks and apologies!!

The one in the OP? Yes. The recently posted one? No.

 

[Shozuki]

The one in the OP? Yes. The recently posted one? No.

Thanks would you mind linking the newest one to me just in case I make a balls up!

Thanks

 

[rylen]

Thanks would you mind linking the newest one to me just in case I make a balls up!

Thanks

twistedumbrella posted the latest one on page 10, and I can confirm that wifi works on that one.

 

[Shozuki]

twistedumbrella posted the latest one on page 10, and I can confirm that wifi works on that one.

Thanks, can I flash it with shield ram or CWM? Sorry a bit new to this trying to work out how to flash it!

Thanks!

 

[rylen]

Thanks, can I flash it with shield ram or CWM? Sorry a bit new to this trying to work out how to flash it!

Thanks!

I'm kind of new with flashing also, I just followed bluecarbon's instruction on page 11.

You can download "[root]recovery tools -flasher" from Play, and use that if you are not comfy with fast boot. Back up your boot in recovery, open the program, select flash kernel (not recovery), select "other from storage", and then navigate to the boot.IMG. I use it, not because I do not like using fastboot, but often it is more convenient.

Sent from my Nexus 7 using Tapatalk

---------- Post added at 10:40 PM ---------- Previous post was at 10:36 PM ----------





Sent from my Nexus 7 using Tapatalk

 

[AkiroX]

Hey guys, I've a question.

I've got an EVGA Tegra Note 7. Has a Tegra 4 just like this. Mine has 1GB of ram, though.. And obviously, a bigger screen since its a tablet.

Now my question isn't whether it'll work or not.. But if the fastboot method works to let me temp boot and see if it does work? Or at least boots? Is that the point of the fastboot boot up?

Also.. How do I perform said boot up? Where do I put the IMG so fastboot pics it up? I see no CD C:/Users etcetc command here...

 

[mudflap2.0]

is this going to be ported/updated for the new 4.4 kitkat update?, im surprised there wasn't any kitkat custom roms before the ota came out lol!

 

[twistedumbrella]

is this going to be ported/updated for the new 4.4 kitkat update?, im surprised there wasn't any kitkat custom roms before the ota came out lol!

What do you want in a custom ROM that requires a ROM to do? Nvidia took the time to look at the custom modding scene when they built the Shield. They focused on squeezing max performance out of the least amount of battery. That is usually the only thing a custom ROM has to offer that isn't theming. As far as Overclocking, I have yet to run anything less than twice as fast as my Nexus 5 and I have my CPU speed set to top out well below the default max. Having the option is more or less just having the option.

 

[mudflap2.0]

theming,su,and more

What do you want in a custom ROM that requires a ROM to do? Nvidia took the time to look at the custom modding scene when they built the Shield. They focused on squeezing max performance out of the least amount of battery. That is usually the only thing a custom ROM has to offer that isn't theming. As far as Overclocking, I have yet to run anything less than twice as fast as my Nexus 5 and I have my CPU speed set to top out well below the default max. Having the option is more or less just having the option.

overclocking doesn't hurt, knowing we have a dedicated fan, I applaud NVidia for what they did, with the shield, im just puzzed on why they couldn't make their chips frequency higher,(although it may be due to the performance to power consumption,and heat ratio). there are some things you can do, like port cm11, cm11, has preinstalled root, theme options, also other roms have cool features, like pacman rom, cmon, it has a cherry picked feature list and pacman game pre installed.

 

[twistedumbrella]

overclocking doesn't hurt, knowing we have a dedicated fan, I applaud NVidia for what they did, with the shield, im just puzzed on why they couldn't make their chips frequency higher,(although it may be due to the performance to power consumption,and heat ratio). there are some things you can do, like port cm11, cm11, has preinstalled root, theme options, also other roms have cool features, like pacman rom, cmon, it has a cherry picked feature list and pacman game pre installed.

The frequencies were specifically chosen to support the best performance to the least battery use without causing harm to the hardware over time. All I can say is the modded one gets twice as hot as the stock one doing half the work.

CM on a Shield is exactly what proof of concept stands for. It barely improves stock devices with some integrated mods so I can only imagine the nightmare it would be on something almost entirely specialized.

Those are just my reasons for not doing anything like that. If you feel differently, go for it.