CRT not detected via hotplug on resume

[Rainer Dorsch <ml@bokomoko.de>]

Hello,

after resuming my graphics card sometimes does not come up (see my post 
yesterday).

Comparing drm outputs with drm.debug=6 in syslog reveals among others 

	[drm:intel_crt_detect], CRT not detected via hotplug hotplug"

Does that mean that the monitor (EIZO FlexScan L767) is not reliably detected?

Is that a know problem? Does it make sense to open a bug report?

As a workaround can I enforce that a signal is always driven (it is a desktop, 
the monitor is always there!). Or can enforce that the check is repeated once 
or twice, if it fails (that should bring the probability down)?

Here the full diff (for *1303* the resume was not working):

rd@blackbox:~/tmp.nobackup$ diff -u syslog-intel.drm-1303.part syslog-
intel.drm-1340.part 
--- syslog-intel.drm-1303.part  2011-09-21 13:52:26.103280388 +0200
+++ syslog-intel.drm-1340.part  2011-09-21 13:54:31.949381096 +0200
@@ -9,14 +9,6 @@
 [drm:drm_crtc_helper_set_config], 
 [drm:drm_crtc_helper_set_config], [CRTC:3] [FB:17] #connectors=1 (x y) (0 0)
 [drm:drm_crtc_helper_set_config], [CONNECTOR:8:HDMI-A-1] to [CRTC:3]
-[drm:intel_crt_detect], CRT not detected via hotplug
-[drm:output_poll_execute], [CONNECTOR:5:VGA-1] status updated from 2 to 2
-[drm:intel_sdvo_debug_write], SDVOB: W: 0B                         
(SDVO_CMD_GET_ATTACHED_DISPLAYS)
-[drm:intel_sdvo_read_response], SDVOB: R: (Success) 01 00
-[drm:intel_sdvo_detect], SDVO response 1 0 [1]
-[drm:intel_sdvo_debug_write], SDVOB: W: 7A 02                      
(SDVO_CMD_SET_CONTROL_BUS_SWITCH)
-[drm:intel_sdvo_debug_write], SDVOB: W: 7A 02                      
(SDVO_CMD_SET_CONTROL_BUS_SWITCH)
-[drm:output_poll_execute], [CONNECTOR:8:HDMI-A-1] status updated from 1 to 1
 [drm:i915_get_vblank_counter], trying to get vblank count for disabled pipe B
 [drm:intel_opregion_setup], graphic opregion physical addr: 0xcf78e0f4
 [drm:intel_opregion_setup], Public ACPI methods supported
@@ -97,10 +89,8 @@
 [drm:drm_mode_debug_printmodeline], Modeline 13:"640x480" 60 25200 640 656 
752 800 480 490 492 525 0x40 0xa
 [drm:drm_mode_debug_printmodeline], Modeline 14:"720x400" 70 28320 720 738 
846 900 400 412 414 449 0x40 0x6
 [drm:drm_mode_getconnector], [CONNECTOR:8:?]
-[drm:drm_mode_addfb], [FB:24]
 [drm:intel_crtc_cursor_set], 
-[drm:drm_mode_addfb], [FB:21]
-[drm:drm_mode_addfb], [FB:24]
+[drm:drm_mode_addfb], [FB:25]
 [drm:intel_crt_detect], CRT not detected via hotplug
 [drm:output_poll_execute], [CONNECTOR:5:VGA-1] status updated from 2 to 2
 [drm:intel_sdvo_debug_write], SDVOB: W: 0B                         
(SDVO_CMD_GET_ATTACHED_DISPLAYS)
rd@blackbox:~/tmp.nobackup$ man diff
rd@blackbox:~/tmp.nobackup$ man diff
rd@blackbox:~/tmp.nobackup$ man diff
rd@blackbox:~/tmp.nobackup$ scp  syslog-intel
syslog-intel~                syslog-intel.drm             syslog-
intel.drm-1303.part   syslog-intel.drm-1340.part   
syslog-intel                 syslog-intel.drm-1303        syslog-
intel.drm.1340        
rd@blackbox:~/tmp.nobackup$

Full log is here

        http://bokomoko.de/~rd/syslog-drm.6

around 13:03 the resume was not detecting the monitor, around 13:40 the resume 
was detecting the monitor.


Thanks,
Rainer

-- 
Rainer Dorsch
http://bokomoko.de/