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From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 106191] Failure to recognize DisplayPort signal
Date: Mon, 23 Apr 2018 13:23:33 +0000	[thread overview]
Message-ID: <bug-106191-502@http.bugs.freedesktop.org/> (raw)


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https://bugs.freedesktop.org/show_bug.cgi?id=106191

            Bug ID: 106191
           Summary: Failure to recognize DisplayPort signal
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: francois.jacques@gmail.com

Created attachment 139004
  --> https://bugs.freedesktop.org/attachment.cgi?id=139004&action=edit
callstack from DRM/radeon

DRM/radeon fails with in drm_dp_link_rate_to_bw_code 

Driver fails to negotiate video resolution with DP-connected monitor, on any of
4 DP ports. 
Controller can drive monitor at 2048x1080 through HDMI adapter. Straight DP
cable only works in console (low-res)

Disconnecting power cable from monitor for 5 minutes trick doesn't help ;)

Video controller: FirePro v8800 ChipID 0x6888 (see hardware.txt for details, 4
DPs)
DP monitor: Dell U2717DA 
Workstation: HP xw8600
Kernel messages with backtrace: see var_log_messages_excerpt.txt
Max res supported by monitor: 1440p (see Xorg.0.log)

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             reply	other threads:[~2018-04-23 13:23 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-23 13:23 bugzilla-daemon [this message]
2018-04-23 13:24 ` [Bug 106191] Failure to recognize DisplayPort signal bugzilla-daemon
2018-04-23 13:25 ` bugzilla-daemon
2018-04-23 13:27 ` bugzilla-daemon
2018-04-23 13:29 ` bugzilla-daemon
2018-04-23 13:34 ` bugzilla-daemon
2018-04-23 13:36 ` bugzilla-daemon
2018-04-23 13:42 ` [Bug 106191] FirePro v8800 " bugzilla-daemon
2018-04-23 14:43 ` bugzilla-daemon
2018-04-23 16:44 ` bugzilla-daemon
2018-04-23 16:48 ` bugzilla-daemon
2018-04-23 17:14 ` bugzilla-daemon
2018-04-24 11:10 ` bugzilla-daemon
2018-04-25  1:26 ` bugzilla-daemon
2018-04-25  2:14 ` bugzilla-daemon
2018-04-25  2:24 ` bugzilla-daemon
2019-11-19  9:33 ` bugzilla-daemon

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