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Black screen but no error in /var/log/Xorg.0.log
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YTW
n00b
n00b


Joined: 30 Aug 2016
Posts: 65
Location: Taiwan

PostPosted: Tue Sep 13, 2016 9:33 am    Post subject: Black screen but no error in /var/log/Xorg.0.log Reply with quote

There is no 'EE' in /var/log/Xorg.0.log.
I don't know why still show black screen after /etc/init.d/xdm (I use sddm)
Code:
AIGLX: Suspending AIGLX clients for VT switch


I have VIDEO_CARDS="intel radeon" which get drivers from xorg-drivers
lspci | grep VGA
Code:

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M]



and I only configured radeon for xorg
Code:
Section "ServerLayout"
   Identifier   "Default Layout"
   Option   "ignoreABI"   "1"   
EndSection

Section   "Monitor"
   Identifier   "Default Monitor"
EndSection

Section "Device"
   Identifier   "Radeon"
   Driver   "radeon"
   #Option   "AccelMethod"   "glamor"
   #Option   "DRI" "2"
   #Option   "TearFree" "on"
   BusID   "PCI:02:00:0"
EndSection

Section "Screen"
   Identifier "Default Screen"
   Monitor   "Default Monitor"
   Device "Radeon"
EndSection


Here is eselect mesa list
Code:
64bit i915 (Intel 915, 945)
  [1]   classic
  [2]   gallium *
64bit i965 (Intel GMA 965, G/Q3x, G/Q4x, HD)
  [1]   classic *
64bit r300 (Radeon R300-R500)
  [1]   gallium *
64bit r600 (Radeon R600-R700, Evergreen, Northern Islands)
  [1]   gallium *
64bit sw (Software renderer)
  [1]   classic
  [2]   gallium *
32bit i915 (Intel 915, 945)
  [1]   classic
  [2]   gallium *
32bit i965 (Intel GMA 965, G/Q3x, G/Q4x, HD)
  [1]   classic *
32bit r300 (Radeon R300-R500)
  [1]   gallium *
32bit r600 (Radeon R600-R700, Evergreen, Northern Islands)
  [1]   gallium *
32bit sw (Software renderer)
  [1]   classic
  [2]   gallium *


Or someone who has xorg.conf that works at your machine with radeon, I can try more...
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YTW
n00b
n00b


Joined: 30 Aug 2016
Posts: 65
Location: Taiwan

PostPosted: Wed Sep 21, 2016 11:27 am    Post subject: Reply with quote

After all cleaning up fglrx modules in machine and make sure this is not the problem from radeon driver (see a bug report to xorg)
there are errors in sddm.log.

Code:
[23:31:52.303] (EE) HELPER: Received a wrong opcode instead of AUTHENTICATED: 0
[23:31:52.303] (EE) HELPER: Unable to run user session: unknown session type
[23:31:52.303] (EE) HELPER:  Auth: SafeDataStream: Could not write all stored data
[23:31:52.303] (EE) HELPER: Received a wrong opcode instead of SESSION_STATUS: 0


Code:
[00:19:41.701] (EE) HELPER: Received a wrong opcode instead of AUTHENTICATED: 0
[00:19:41.702] (EE) HELPER: Unable to run user session: unknown session type
[00:19:41.702] (EE) HELPER:  Auth: SafeDataStream: Could not write all stored data
[00:19:41.702] (EE) HELPER: Received a wrong opcode instead of SESSION_STATUS: 0


Code:
[23:35:44.592] (WW) DAEMON: QProcess: Destroyed while process ("/usr/libexec/sddm-helper") is still running.
[23:35:44.594] (II) HELPER: [PAM] Starting...
[23:35:44.595] (II) HELPER: [PAM] Authenticating...
[23:35:44.595] (II) HELPER: [PAM] returning.
[23:35:44.595] (EE) HELPER:  Auth: SafeDataStream: Could not write all stored data
[23:35:44.595] (WW) HELPER: QIODevice::read (QTcpSocket): device not open
[23:35:44.595] (EE) HELPER: Received a wrong opcode instead of AUTHENTICATED: 0
[23:35:44.595] (EE) HELPER: Unable to run user session: unknown session type
[23:35:44.595] (EE) HELPER:  Auth: SafeDataStream: Could not write all stored data
[23:35:44.595] (WW) HELPER: QIODevice::read (QTcpSocket): device not open
[23:35:44.595] (EE) HELPER: Received a wrong opcode instead of SESSION_STATUS: 0
[23:35:44.595] (II) HELPER: [PAM] Ended.


I am now looking for where to report bug to sddm.
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