<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [CI][DRMTIP] igt@*suspend* - incomplete" href="https://bugs.freedesktop.org/show_bug.cgi?id=108743#c10">Comment # 10</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [CI][DRMTIP] igt@*suspend* - incomplete" href="https://bugs.freedesktop.org/show_bug.cgi?id=108743">bug 108743</a> from <a class="email" href="mailto:don.hiatt@intel.com" title="Don Hiatt <don.hiatt@intel.com>"> Don Hiatt</a> <pre>Suja and I have been working on trying to duplicate this. On ICL, the i915_suspend test just appears to hang (see below) gta@ubt-18:~/ril-src/igt-gpu-tools$ sudo ./build/tests/i915_suspend IGT-Version: 1.24-g5a6c6856 (x86_64) (Linux: 5.3.0+ x86_64) Starting subtest: fence-restore-tiled2untiled [cmd] rtcwake: assuming RTC uses UTC ... rtcwake: wakeup from "mem" using /dev/rtc0 at Fri Sep 27 22:42:17 2019 checking the first canary object checking the second canary object Subtest fence-restore-tiled2untiled: SUCCESS (7.957s) Starting subtest: fence-restore-untiled [cmd] rtcwake: assuming RTC uses UTC ... rtcwake: wakeup from "mem" using /dev/rtc0 at Fri Sep 27 22:42:39 2019 checking the first canary object checking the second canary object Subtest fence-restore-untiled: SUCCESS (6.978s) Starting subtest: debugfs-reader [cmd] rtcwake: assuming RTC uses UTC ... < rtcwake: wakeup from "mem" using /dev/rtc0 at Fri Sep 27 22:43:02 2019 <------- seems to hang here? However, with a serial port connected it turns out that the dut does not die after all, as we still have an interactive console and can see kernel messages. It seems that the netdev isn't waking up and that is why the test appears to hand and you can't ssh into it again. Also, looking the running processes the test appears to be running. Lastly, we're seeing a "PM: Cannot get swap device, try swapon -a" and "PM: Cannot get swap writer" on the console. I wondering if the test is trying to hibernate and is expecting swap space? I have the console going and it looks like the machine is not really dead. The serial port is still interactive but the network appears dead, that is why you don’t see any output on your terminal, nor can you ssh into the dut. >From the serial console, the test is still running. The error on the serial console seems to imply it is expecting the machine to have a swap space enabled. Perhaps that is the reason the test just appears to hang. We now know the device does come out of suspend, only that the network isn’t restarted.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>