Antminer S2 Support and Overclocking Thread

[klondike_bar]

I tried oc 212M set but failed to work, I did a reset. the original power supply can handle 212Mhz?

No, the original supply is pushed near it's limit. For 212mhz you really need a 1200w or better supply since the power draw of 1100gh is around 1050-1150w in the psu

[82kevin]

I'm hoping someone here can help me since I am a relatively new to using antminers. I have three s1's and two s3's and I just bought my first s2. I have successfully ssh into the s1's and s3's and have overclocked/underclocked without any problems, but for some reason I cannot edit the /etc/config in the s2. I open putty and enter root/admin and instead of seeing the normal welcome screen all I see is a line "root@antminer:~#", then I enter "/etc/config" and it says "-sh: /etc/config: not found". I have updated to the latest firmware from Bitmain and have rebooted several times. Any ideas what might be wrong?

[d2dtk]

Follow the OP

Step 2 Click "YES" on the "Security Alert" that pops up
Step 3 Login with User: root Password: admin
Step 4 Type "cd /config"
Step 5 Type "vi asic-freq.config

I'm hoping someone here can help me since I am a relatively new to using antminers. I have three s1's and two s3's and I just bought my first s2. I have successfully ssh into the s1's and s3's and have overclocked/underclocked without any problems, but for some reason I cannot edit the /etc/config in the s2. I open putty and enter root/admin and instead of seeing the normal welcome screen all I see is a line "root@antminer:~#", then I enter "/etc/config" and it says "-sh: /etc/config: not found". I have updated to the latest firmware from Bitmain and have rebooted several times. Any ideas what might be wrong?

[fullzero]

Anyone tried underclocking or undervolting these?

Wondered if anything better than 1w/gh can be achieved

I have stable 0.95 W/GH; but at great cost to GH/s:  9 blade S2 running 396 watts 416 GH/s

[s2miner]

Any news on getting a cgminer 4.x firmware upgrade for S2.
S3 upgrade is there but it broke the  miner configuration page for me.

[letuslook]

We are all still waiting for a firmware fix / update for the antminer S2,

Looks like bitmain is not working that hard on a fix

~ Luc

[Rabinovitch]

And waiting for an upgrade kit...  I couldn't use this non serious 200$ coupon...

[MissouriMiner]

+1 on an updated cgminer.  4.6.x would be nice. 

*** PLEASE BITMAIN provide us with a cgminer/firmware update to the S2. ***

I plan to run my S2's for quite some time.  With 1Th/s at 1W/Gh, they are still very relevant.  For example; Rockminer's biggest box only does 800Gh/s at 1000W, which is 1.25W/Gh.  My point is, the S2 still has a lot of life in it, so keep supporting it!  We NEED a CGMINER 4.6 update.  The last update was over 4 months ago.  Cgminer 3.12.0 is ancient in miner age.

[Rabinovitch]

So here is new firmware for S2:

https://bitcointalk.org/index.php?topic=515448.msg9389695#msg9389695

  At last...

[letuslook]

Overclocking not really working on this firmware,..

Anyone find a way to overclock them past 200mh/s?

[d2dtk]

Overclocking not really working on this firmware,..

Anyone find a way to overclock them past 200mh/s?

Did you have to ssh into the unit or is it like an s3?

[MissouriMiner]

+1 on an updated cgminer.  4.6.x would be nice. 

*** PLEASE BITMAIN provide us with a cgminer/firmware update to the S2. ***

I plan to run my S2's for quite some time.  With 1Th/s at 1W/Gh, they are still very relevant.  For example; Rockminer's biggest box only does 800Gh/s at 1000W, which is 1.25W/Gh.  My point is, the S2 still has a lot of life in it, so keep supporting it!  We NEED a CGMINER 4.6 update.  The last update was over 4 months ago.  Cgminer 3.12.0 is ancient in miner age.

Thank you, thank you, thank you, Bitmain for the new firmware with Cgminer 4.6.1!  It is so nice to see 995 Gh/s average on my S2 mining P2Pool. 

[Rabinovitch]

Thank them for S2 became non-overclockable with this new firmware?.. Strange...

[StormTheFront]

Overclocking not really working on this firmware,..

With the S4, they have changed the location of where the Frequency settings are stored.
The file in question from the S2 remains on the S4 firmware SD, but is obsolete and useless.
Perhaps with this latest firmware they have done the same with S2.
Changed the location of the Frequency settings.

[bubbleindustry]

Thanks for all the info here guys, I was about to ditch my S2s, this has given them some more life just for the fun value of SSH into them and playing with the ASIC freqs 

[Rabinovitch]

Step 4 Type "cd /config"
Step 5 Type "vi asic-freq.config

Sure I have missed something, but the "vi asic-freq.config" file is empty (ls doesn't show it, it's absent there...). What's wrong with newest FW?..

p.s. also "find" command can't find it...

After all: how to overclock S2 with latest firmware by Bitmain?..

[MissouriMiner]

Step 4 Type "cd /config"
Step 5 Type "vi asic-freq.config

Sure I have missed something, but the "vi asic-freq.config" file is empty (ls doesn't show it, it's absent there...). What's wrong with newest FW?..

p.s. also "find" command can't find it...

After all: how to overclock S2 with latest firmware by Bitmain?..

You can now use the UI to set it (just like S3/S4/C1).  On the Miner Configuration tab, there is now Advanced Settings, next to General Settings.  Easy to miss if you're not expecting it.  There is a drop-down to select the freq.  And then the option is passed to cgminer as part of --bitmain-options.  There is a text file that contains the settings that appear in the drop-down box, but I can't recall the file name at the moment.

[Rabinovitch]

Maximum frequency value in "Advanced settings" tab is 200, but I want more. )

[MissouriMiner]

Maximum frequency value in "Advanced settings" tab is 200, but I want more. )

Took me a while to find the file.  Edit this file and add the freq, if you have the values.  Or I can post them if needed.  Don't have handy right now.  They should be on this forum.  Same values as used to be in asic-freq.conf, just different format.

/usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua

[Rabinovitch]

  I can't even see the "lua" folder under /usr/lib/........