<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">On Apr 6, 2015, at 8:46 AM, Richard Flint <<a href="mailto:richard.flint@gmail.com">richard.flint@gmail.com</a>> wrote:<br><div><br class="Apple-interchange-newline"><blockquote type="cite">Unfortunately this approach isn't going to work.<div><br style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">I've done some further research and it would appear that it is the underlying ugen device and not libusb that is failing to honor the timeout.</div><div style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br></div><div style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><a href="https://mail-index.netbsd.org/tech-misc/2006/03/17/0000.html">https://mail-index.netbsd.org/tech-misc/2006/03/17/0000.html</a></div><div style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br></div><div style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">The person above worked around this by having the device opened in non blocking mode using the <span style="line-height: normal;">O_NONBLOCK flag but this required changing libusb</span>.</div></div></blockquote><div><br class="Apple-interchange-newline"></div><div>Unfortunately, the ugen drivers in Solaris, NetBSD, FreeBSD, etc. are similarly named, but not necessarily the same code. At least with the *BSDs, you can inspect the code to see what has changed (and the BSD USB support has improved significantly across the board since 2006 when that message was posted).</div><div><br></div><div>OpenUSB seems to work around the blocking issue by creating a separate timeout thread, so I still think there is some hope there.</div><div><br></div><div>On the other hand, if that doesn't work, I would consider setting up another system dedicated to monitoring the UPS, and setup NUT on Solaris to be a client to the other system. Linux on x86_64 is probably the best supported OS for NUT and a USB UPS, but others have had success with embedded ARM and MIPS Linux systems. I have a Soekris net5501 running FreeBSD monitoring the USB UPS in my home "data center" in the basement, and it has been very reliable: <a href="http://soekris.com/products/net5501.html">http://soekris.com/products/net5501.html</a> (also available in a rack-mount form factor; I have no connection to Soekris other than using their equipment)</div></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px;"><div>-- </div><div>Charles Lepple</div><div>clepple@gmail</div><div><br></div></span><br class="Apple-interchange-newline">
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