VIDEO - Syncmaster 204B with Radeon driver on DVI connection blinking EDID DDC

Debian_Poland · 06-08-2008, 06:09 AM

Hello,

I have Samsung SyncMaster 204B connected via DVI to ATI Radeon card under Debian

There is known bug that with resolution 1600x1200 and refresh rate 60 Hz monitor is blinking. To stop it refresh rate needs to be changed to lower than 60Hz for example 55 or 59. I have prepared custom modelines in xorg.conf but i can not make my box force use it. Can you help?

This is interesting part of xorg.conf

Code:

Section "Device"
        Identifier      "ATI Technologies Inc RV280 [Radeon 9200]"
        Driver          "radeon"
        #BusID          "PCI:1:0:0"
        #Option         "AGPMode"       "4"
        Option          "IgnoreEDID"    "on"
        Option          "DefaultTMDSPLL" "on"
        Option          "DDCMode"       "off"
        Option          "PanelSize"     "1600x1200"
        Option          "ColorTiling"   "on"
        Option          "DRI"           "on"
EndSection

Section "Monitor"
        Identifier   "Monitor 0"
        #Option "DPMS"
        modeline  "640x480@75" 31.5 640 656 720 840 480 481 484 500 -vsync -hsync
        modeline  "800x600@75" 49.5 800 816 896 1056 600 601 604 625 +hsync +vsync
        modeline  "1024x768@70" 75.0 1024 1048 1184 1328 768 771 777 806 -vsync -hsync
        modeline  "1152x864@75" 108.0 1152 1216 1344 1600 864 865 868 900 +hsync +vsync
        modeline  "1280x1024@75" 135.0 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync
        modeline  "1400x1050@60" 122.61 1400 1488 1640 1880 1050 1051 1054 1087 -hsync +vsync
        # modeline  "1600x1200@60" 162.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
        modeline  "1600x1200@55" 150.0 1600 1804 1996 2160 1200 1201 1204 1250 +hsync +vsync
        #modeline  "1600x1200_59.92_rb" 130.25 1600 1648 1680 1760 1200 1203 1207 1235 +hsync -vsync
        gamma 1.0
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Device          "ATI Technologies Inc RV280 [Radeon 9200]"
        Monitor         "Monitor 0"
        DefaultDepth    24
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes  "1600x1200@55" "1400x1050@60" "1280x1024@75" "1152x864@75" "1024x768@70" "1024x768@75" "800x600@75" "640x480@75"
        EndSubSection
EndSection

This is part of Xorg.O.log

Code:

$ cat /var/log/Xorg.0.log |grep "WW\|EE"
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
(II) Loading extension MIT-SCREEN-SAVER
(WW) RADEON(0): No crtc mode list for crtc 1,continuing with desired mode
(WW) RADEON(0): DRI init changed memory map, adjusting ...
(WW) RADEON(0):   MC_FB_LOCATION  was: 0xd7ffd000 is: 0xd7ffd000
(WW) RADEON(0):   MC_AGP_LOCATION was: 0xffffffc0 is: 0xe07fe000

Code:

$ lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] Host Bridge (rev 01)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800/K8T890 South]
00:08.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13)
00:09.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61)
00:09.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61)
00:09.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63)
00:0b.0 Multimedia video controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder (rev 05)
00:0f.0 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200] (rev 01)

When I change "IgnoreEDID" to "on" servers starts in 1280x768 resolution !? when it is "off" it starts in 1600x1200 but blinking...

Can anyone help?

Thanks.