low hashrate when mining x11 ?

[xyzwarrior]

I have a R9 270 and a HD 7970 on my PC and I use it to mine. Yesterday, it mine just fine with around 2 Mhash from the R9 270 and 3.3 Mhash from the 7970. But when i tried to mine now the r9 270 only produce around 1.2 Mhash and the 7970 around 700 Khash. My settings are  --thread-concurrency 8192 -I 13 --lookup-gap 2 --worksize 256 -g 2 --gpu-engine 1160 --gpu-memclock 1450 --no-submit-stale and I'm using catalyst 14.4. But even with the gpu engine and the gpu memclock the sgminer only report 300 Core and 150 memclock from both the gpu. And I can't seem to change the clock speed reported by sgminer even with amd overdrive or msi afterburner. Any help would be appreciated.

[Newwsr]

playing outside and low sgminer him again and restarts the machine

[xyzwarrior]

I've tried restarting my machine and it didn't work

[Newwsr]

download sgminer again and throw away the other what you're using

[xyzwarrior]

still didn't fix it. and if I change the driver to 14.6 beta i get my hashrate back but all HW error

[Newwsr]

still didn't fix it. and if I change the driver to 14.6 beta i get my hashrate back but all HW error

puts the driver 13:12

[xyzwarrior]

still no luck. my 7970 is still at 700 Khash

[xyzwarrior]

wait a sec, which one is gpu 0 and which one is gpu 1 ? My 7970 is plugged to the PCIe slot above the R9 270, but my monitor is plugged to the R9 270

[Blank]

Might just need to fiddle around with afterburner abit.
on the Afterburner settings menu make sure to tick/select:

• Force Constant Voltage
• Extend official overclocking limits
• Disable ULPS
• Unofficial overclocking mode "without PowerPlay support" (i think this is the most important one)

Could also try uninstalling/deleting the MSI Afterburner App and folder.
Another thing worth trying is enabling/disabling Overdrive in the CCC.

[xyzwarrior]

I seem to be able to figure it out by plugging my monitor to the 7970. If i plug the monitor to R9 270, the GPU 0 (HD 7970) shows 1.5 Mhash while the GPU 1 (R9 270) shows 800 Khash. But if I plug the monitor to the 7970 then unplug it then plug it to the R9 270 I get 1.5 Mhash on GPU 0 (HD 7970) and 2.7 Mhash on GPU 1 (R9 270). Doesn't a HD 7970 supposed to have a higher hashrate than a R9 270 ?

NB : I want to use the R9 270 to play games when I want to while the 7970 is mining and use both to mine when I don't want to play games.