Misinterpretation of Standard Causing USB Disconnects On Resume In Linux

hypnosec writes "According to a new revelation by Sarah Sharp, misinterpretation of the USB 2.0 standard may have been the culprit behind USB disconnects on resume in Linux all along rather than cheap and buggy devices. According to Sharp the USB core is to blame for the disconnections rather than the devices themselves as the core doesn't wait long enough for the devices to transition from a 'resume state to U0.' The USB 2.0 standard states that system software that handles USB must provide for 10ms resume recovery time (TRSMRCY) during which it shouldn't attempt a connection to the device connected to that particular bus segment."

Comments

Re:not surprising

[philip.paradis]

Oh heavens, it must be happening again. I'm obviously experiencing a relapse of those terrible hallucinations that have plagued me for years. Oddly enough, they seem to be at their worst when I'm at home. I've had visions of a beautiful woman in my house, with two beautiful little girls running around as well. I know, I should seek medical attention immediately, as this could be a sign of a serious condition. Speaking of conditions, my sense of reality is so distorted that I've come to believe my fictitious wife is pregnant with our third child! I've obviously taken a head first dive off the deep end.

Oh, wait, she's real after all. There she is, sitting on my couch, with her laptop running Debian 7, eating the steak I just cooked, wearing a shirt from my employer, grimacing at the thought of me putting this on Facebook. I guess I only stretched the truth a tad by putting it on /. instead.