reassign 711237 kde-workspace-bin found 711237 4:4.8.4-6 thanks Sune (svuorela on IRC) suggested I talked to Alex Fiestas (afiestas on #solid - irc.freenode.net), and I did. He suggested I ran 'kscreen-console bug' and said that the problem most likely is caused by powerdevil, a kded module in the kde-workspace-bin package.
While trying to figure out what was causing the black scree, I also got some ideas for debugging on #debian-kde, suggesting to use kdebugdialog to enable debugging in ksmserver, ksplash and something like that to get log messages to show up in .xsession-errors. Luckily this did not prove neccessary, as powerdevil was the cause, and editing /usr/share/kde4/services/kded/powerdevil.desktop, changing X-KDE-Kded-autoload from true to false worked around the problem. Reassigning this bug to the binary package most likely responsible. The output from kscreen-console bug is attached. -- Happy hacking Petter Reinholdtsen
START Config::current() took 83 milliseconds ========================xrandr --verbose========================== Screen 0: minimum 320 x 200, current 1600 x 900, maximum 32767 x 32767 LVDS1 connected 1600x900+0+0 (0x47) normal (normal left inverted right x axis y axis) 383mm x 215mm Identifier: 0x42 Timestamp: 21974 Subpixel: horizontal rgb Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff0030e4400300000000 00150103802616780a6c159c59559927 18505400000001010101010101010101 0101010101012f2640b860840c303030 23007fd7100000190000000000000000 00000000000000000000000000fe004c 4720446973706c61790a2020000000fe 004c503137335744312d544c4134007e BACKLIGHT: 0 (0x00000000) range: (0,100) Backlight: 0 (0x00000000) range: (0,100) scaling mode: Full aspect supported: None Full Center Full aspect 1600x900 (0x47) 97.8MHz -HSync -VSync *current +preferred h: width 1600 start 1648 end 1696 total 1784 skew 0 clock 54.8KHz v: height 900 start 902 end 905 total 912 clock 60.1Hz 1440x900 (0x48) 106.5MHz -HSync +VSync h: width 1440 start 1520 end 1672 total 1904 skew 0 clock 55.9KHz v: height 900 start 903 end 909 total 934 clock 59.9Hz 1360x768 (0x49) 84.8MHz -HSync +VSync h: width 1360 start 1432 end 1568 total 1776 skew 0 clock 47.7KHz v: height 768 start 771 end 781 total 798 clock 59.8Hz 1360x768 (0x4a) 72.0MHz +HSync -VSync h: width 1360 start 1408 end 1440 total 1520 skew 0 clock 47.4KHz v: height 768 start 771 end 781 total 790 clock 60.0Hz 1152x864 (0x4b) 81.6MHz -HSync +VSync h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.7KHz v: height 864 start 865 end 868 total 895 clock 60.0Hz 1024x768 (0x4c) 65.0MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz v: height 768 start 771 end 777 total 806 clock 60.0Hz 800x600 (0x4d) 40.0MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz v: height 600 start 601 end 605 total 628 clock 60.3Hz 800x600 (0x4e) 36.0MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.2KHz v: height 600 start 601 end 603 total 625 clock 56.2Hz 640x480 (0x4f) 25.2MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.5KHz v: height 480 start 490 end 492 total 525 clock 59.9Hz VGA1 disconnected (normal left inverted right x axis y axis) Identifier: 0x43 Timestamp: 21974 Subpixel: unknown Clones: CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: HDMI1 disconnected (normal left inverted right x axis y axis) Identifier: 0x44 Timestamp: 21974 Subpixel: unknown Clones: CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on DP1 disconnected (normal left inverted right x axis y axis) Identifier: 0x45 Timestamp: 21974 Subpixel: unknown Clones: CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on ========================Outputs=================================== Screen: maxSize: QSize(32767, 32767) minSize: QSize(320, 200) currentSize: QSize(1600, 900) ----------------------------------------------------- Id: 68 Name: "HDMI1" Type: "Unknown" Connected: false ----------------------------------------------------- Id: 69 Name: "DP1" Type: "Unknown" Connected: false ----------------------------------------------------- Id: 66 Name: "LVDS1" Type: "Panel (Laptop)" Connected: true Enabled: true Primary: false Rotation: 1 Pos: QPoint(0,0) Size: QSize(1600, 900) Clones: true Mode: "71" Preferred Mode: "71" Preferred modes: ("71") Modes: "77" "800x600" QSize(800, 600) 60.3165 "78" "800x600" QSize(800, 600) 56.25 "79" "640x480" QSize(640, 480) 59.9405 "71" "1600x900" QSize(1600, 900) 60.0796 "72" "1440x900" QSize(1440, 900) 59.8874 "73" "1360x768" QSize(1360, 768) 59.799 "74" "1360x768" QSize(1360, 768) 59.96 "75" "1152x864" QSize(1152, 864) 59.9971 "76" "1024x768" QSize(1024, 768) 60.0038 EDID Info: Device ID: "xrandr-unknown" Name: "" Vendor: "" Serial: "" EISA ID: "LP173WD1-TLA" Hash: "9ce38cadbf9f336b0d06506d64149425" Width: 38 Height: 22 Gamma: 2 Red: QQuaternion(scalar:1, vector:(0.610352, 0.347656, 0)) Green: QQuaternion(scalar:1, vector:(0.334961, 0.597656, 0)) Blue: QQuaternion(scalar:1, vector:(0.152344, 0.0947266, 0)) White: QQuaternion(scalar:1, vector:(0.313477, 0.329102, 0)) ----------------------------------------------------- Id: 67 Name: "VGA1" Type: "Unknown" Connected: false ========================Configurations============================ Configs in: "/home/pere/.kde/share/apps/kscreen/" Number of files: 0