rMBP 2015 Wake Reason: ARPT (Network)

Same device and same problem here. But I've not met this before until I updated to 10.10.4. Tried resetting SMC and PRAM, testing in safe boot and in another account, all failed. Maybe just rebooting or downgrading to 10.10.3 left, which really is a hassle.

I'll just remember to turn off wifi before closing the lid, and wait for the El Capitan =.=

😟 I have to tell you. El Capitan is the same...At least for now, Public Beta one.

My same Retina Macbook pro 15 wake up every 2hrs...

I agree - El Cap has not solved this problem. It started sometime in April after a beta Yosemite update.

It only happened to the 2015 Model which adopted the 5th Gen Intel Broadwell Chip.

Ahhhh OMG...

but you said you thought it was solved.

After chatting with Apple support, they seemed not very familiar with this like they never heard of it. So the problem might not be considered specifically when they update new OS versions I guess. Well hopefully it'll happen to be solved soon :-(

I thought it'd been solved. My fault. I was so excited thinking that it's finally be solved that I reported back too soon. As long as your wifi is on, it would constantly wake your mac up. Specifically for 2015 Broadwell chipset model.

Enhanced notifications that can wake your Mac

Above is a useful link for Broadwell mac user. But even I use DNT, WiFi would still keep waking up. I've chatted with Care too long ago. They told me the same thing as you've described. 😟 El Capitan aint gonna fix this at least for now. As a result, I've developed a habit of turning off wifi before sleep. LOL

This seems to be not a Broadwell-specific issue. On my Macbook 15" Mid 2015 (still Haswell) I have the same issues.

That would be a surprise. I once thought it's limited to BDW. Now we have to question Apple what they did to the 2015 model. 😟

Some additional info: Most often I get the following wake reason in the log:

ARPT: Wake Reason: Wake on TCP Timeout

It seems like Apple wants this to happen. But I care more about battery and stability=.=

Anyway, I'm already doing the same thing as your new habit, haha.

<Notice>: Wake reason: ARPT (Network)

<Notice>: ARPT: Wake Reason: Wake on Scan offload; Disconnect reason: Unknown

Same issue here. I really don't know what and why this happens. No difference if the mbp is sleeping with or without power cable. I've also a issue with Wi-Fi after sleep. It won't turn on and I have to restart a mbp for accessing to Wi-Fi networks, but this not happen every single time I open my lid and wake up a macbook from sleep.

I'll propably call to the apple tech support on Monday and asking what is that "Wake on Scan" and is it possible to turn off.

10.10.4 Yosemite and rMBP 13" early 2015.

FYI, I once contacted the Apple Support. At that time, they knew nothing about this issue. For the last two days, El Capitan did a great job not waking up my mac. Maybe, just maybe it's improved in 10.11. There are still some wake events causing by ARPT. But it's greatly reduced. However I could not give a final say. Maybe it's just coincidence. 😀 If you're willing, you could try out public beta of El Capitan.

A week ago I tried the El Capitan but it totally broke my Wi-fi. I was not able to turn it on after first sleep. Restart etc. did not do the job. I had to install a latest backup via time machine for getting the unit working again. 🙂

Edit: Btw I just ran the diagnostic (shut down -> power on -> immediately press D and wait for the diagnostic start). No issues found. 🙂