<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVA8] The DisplayPort screen does not light up at first try on Linux 3.16" href="https://bugs.freedesktop.org/show_bug.cgi?id=82247#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVA8] The DisplayPort screen does not light up at first try on Linux 3.16" href="https://bugs.freedesktop.org/show_bug.cgi?id=82247">bug 82247</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>Bad case: [ +0,000009] nouveau D[ I2C][0000:01:00.0] PAD:S:01: -> PORT:0b [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 9: 0x00000000 16 [ +0,000563] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 00 0x0110900f 0x10000010 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000003] nouveau D[ PDISP][0000:01:00.0] 02:0006:0344: aux power -> always [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 9: 0x00000100 2 [ +0,000144] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 00 0x01109001 0x10000002 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x0101840a [ +0,000003] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000012] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000003] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 9: 0x00000202 3 [ +0,000154] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 00 0x01109002 0x10000003 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01800000 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000003] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01010101 Good case: [ +0,000009] nouveau D[ I2C][0000:01:00.0] PAD:S:01: -> PORT:0b [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 9: 0x00000000 16 [ +0,000258] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 00 0x0110900f 0x10000010 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01840a11 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00010000 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00060202 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00000000 [ +0,000003] nouveau D[ PDISP][0000:01:00.0] 02:0006:0344: aux power -> always [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 9: 0x00000100 2 [ +0,000144] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 00 0x01109001 0x10000002 [ +0,000003] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x0184840a [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00010000 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00060202 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00000000 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 9: 0x00000202 3 [ +0,000152] nouveau D[ I2C][0000:01:00.0] AUXCH(1): 00 0x01109002 0x10000003 [ +0,000003] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x01800000 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00010000 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00060202 [ +0,000002] nouveau D[ I2C][0000:01:00.0] AUXCH(1): rd 0x00000000 Those 01010101's seem unhealthy... And then later, the bad case has [ +0,000002] nouveau D[ PDISP][0000:01:00.0] 02:0006:0344: 0 lanes at 0 KB/s ... [ +0,000002] nouveau E[ PDISP][0000:01:00.0] 02:0006:0344: link training failed And then later when it tries to train again with 0 lanes one or two more times, and the training actually succeeds but it says there's not enough bw. And then the last time everything works. I think the number of lanes is being computed based on some sort of stale value, I wonder if that's affecting things.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>