gumbo 1.5c overclock

Robchaos_

Well-known member
Feb 18, 2010
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I have compiled the new overclock patch into a boot.img that will work with gumbo 1.5c
This is for those of us out there who can't deal with the constant audio drop outs or just want the stability of a 1.5 rom untill the official sprint update it out.
If you are still on a stock system, gumbo 1.5c can be found here.

ONLY TESTED OVER GUMBO1.5C. PLEASE NANDROID BACKUP BEFORE YOU DO ANYTHING
This update will most likely work over any rom that has already had busybox and the symlinks installed. (almost any custom rom). If you flash it over a rom that did not use gumbos custom lowmemkiller, it adds it.
I believe that I did not break anything. Please let me know if any issues arise.

There are 2 flashable updates. One adds BFS316 to the rom, one does not. (information about Brain Fu*k Scheduler here) The update that does not add BFS to your system has been throughly tested and is stable. The BFS kernel has not been tested as much, so use at your own risk. On my initial flash of the BFS rom, text messaging stopped working. I am going to be trying to fix this, but I think it might be out of my abilities. All I know is it seems some processes must not be starting on boot up, and are being kept closed by the scheduler. I tried without the lowmem killer, I tried actually removing the gumbo services from init.rc, and no luck. I found that if you go into the app manager and force stop htcIQagent and mysms apps, then open up your text message app and everything should be working fine.


.27 kernel, 1.5 os, Gumbo low memory killer, 768 mhz scalable overclock, Brain Fu*k Scheduler


Stable.27 Kernel, 1.5 os, Gumbo low memory killer, 768 Mhz scalable overclock, No BFS

Lowmemkiller is still present in both roms, but in the BFS enabled rom, I commented out the lowmem settings in the /system/init.d/gumbo.sh for testing purposes. If you flash that rom and experience no problems, you can go into the gumbo.sh file and remove the # next to the lowmemorykiller setting and you will have gumbos lowmem killer on top of the BFS. If you experience any problems just recomment the line and reboot.


Benchmarks are vastly improved
linpack 3.29 mflop
benchmark pi 8025 ms




Use setcpu for setting clock speed. When it tells you to select device, select the last setting "custom"

enjoy



Many thanks to:
Gbhil for his informative walk through, help, gumbo 1.5c and lowmem killer
And
Toastcfh for his overclocking patch and backporting BFS316 to the .27 Kernel.
 
Last edited:
been running this for a week now no excess heat or instability. I do not wifi tether much at all though so I haven't seen how it works with that.
This might flash fine over a stock 1.5 rom as long as you flash the update.zip as well as the boot.img.
I have only tested it over gumbo 1.5c tweaker though.
If anyone tries this let me know how it works.
 
Been running your OC kernel for a few days now without any issues. Thanks for your work. I saw over at xda that flipz and toast has a new release with several enhancements. Will you be able to compile a 1.5 kernel with the new tweaks as well? Thanks.
 
in abd shell after the cat /dev/zero > /dev/mtd/mtd2 I get cat error no space left on device. What do I do?
 
Yeah I hit me some google fu. Running nice at710 mhz. Thanks a ton. I've been playing with 2.1 since the leak but I want fast, stable, and it all just works, for me that's gumbo :)

PS your setcpu.txt needs a little cleaning up. I copy pasted it and was quite frazzled as to why it wouldn't work. ;)
 
Hmmm.Odd. maybe my phone changed the formatting. I just copied and pasted the text from my file from my sdcard. All posted from my phones browser.
 
One more question, you recommend removing the scaling line on gumbo.sh. I wasn't sure what to do, but looking at the file, the gumbo.sh settings and setcpu are both set to ondemand scaling. I assume that's ok right?
 
One more question, you recommend removing the scaling line on gumbo.sh. I wasn't sure what to do, but looking at the file, the gumbo.sh settings and setcpu are both set to ondemand scaling. I assume that's ok right?
Its probably best to just comment out the gumbo ondemand line and just use set on boot w setcpu
 
I don't know ANYTHING at all about 1.5 ROMS I went from Stock to Damage Control 2.07. Are there other 1.5 Roms that this would work with? Is there anything about that bootloader that will prevent other 1.5 ROMS from working? Thanks. I think I am done being a pest now. :)
 
I don't know ANYTHING at all about 1.5 ROMS I went from Stock to Damage Control 2.07. Are there other 1.5 Roms that this would work with? Is there anything about that bootloader that will prevent other 1.5 ROMS from working? Thanks. I think I am done being a pest now. :)


No, Gumbo 1.5c has support for ip tunneling and usb support, but I added the libs in for all that in the flashable file. I think it will work with almost any 1.5 rom but I have only tested it with gumbo 1.5c
 
Ok thanks. I am assuming the flashable zip is the kernel patch and if I change roms and want to try an over clock all I have to do is flash that zip. Or do I have to flash the boot.img too? (OK NOW I'm done being a pest :D)
 
Boot.img is the kernel. The zip is just the libraries so WiFi , ip tunneling, etc. Still work
 

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