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john <jdm@××××××××××××.uk> wrote: |
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|
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> On Tue, 29 Dec 2015 11:05:12 +0200 |
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> Alan McKinnon <alan.mckinnon@×××××.com> wrote: |
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> |
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> > On 29/12/2015 11:01, Mick wrote: |
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> > > On Tuesday 29 Dec 2015 02:00:33 wabenbau@×××××.com wrote: |
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> > > |
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> > >> There is a kernel option DRM_LOAD_EDID_FIRMWARE. It allows you to |
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> > >> specify an EDID data set instead of probing for it. If your |
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> > >> problem is caused by broken EDID data, this option maybe will |
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> > >> help you to run the monitor at its full resolution. |
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> > >> |
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> > >> -- |
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> > >> Regards |
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> > >> wabe |
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> > > |
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> > > How would you know what to specify for EDID data, unless the |
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> > > monitor told you what it is? |
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> > > |
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> > |
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> > or if the monitor manufacturer told you what it should be |
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> > |
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> > /alanm |
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> > |
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> |
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> I have had a play with that but no success yet. I have followed the |
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> howto but no success yet but I think now I will have to find .bin file |
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> or settings from manufacturer. |
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> |
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> Darn these gaming monitors! |
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> |
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> Thanks |
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> |
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> John |
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|
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When you install x11-misc/read-edid you will get the programs get-edid |
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and parse-edid. If you type |
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|
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get-edid | parse-edid |
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|
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you will get something like this: |
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|
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=================================================== |
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|
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256-byte EDID successfully retrieved from i2c bus 8 |
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Looks like i2c was successful. Have a good day. |
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Checksum Correct |
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|
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Section "Monitor" |
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Identifier "U32D970" |
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ModelName "U32D970" |
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VendorName "SAM" |
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# Monitor Manufactured week 20 of 2014 |
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# EDID version 1.4 |
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# Digital Display |
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DisplaySize 700 390 |
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Gamma 2.20 |
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Option "DPMS" "true" |
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Horizsync 30-134 |
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VertRefresh 56-75 |
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# Maximum pixel clock is 540MHz |
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#Not giving standard mode: 1152x864, 75Hz |
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#Not giving standard mode: 1280x800, 60Hz |
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#Not giving standard mode: 1280x720, 60Hz |
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#Not giving standard mode: 1280x1024, 60Hz |
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#Not giving standard mode: 1440x900, 60Hz |
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#Not giving standard mode: 1600x900, 60Hz |
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#Not giving standard mode: 1680x1050, 60Hz |
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|
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#Extension block found. Parsing... |
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Modeline "Mode 2" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync |
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Modeline "Mode 0" +hsync -vsync |
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Modeline "Mode 1" +hsync -vsync |
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Modeline "Mode 3" +hsync +vsync |
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Option "PreferredMode" "Mode 2" |
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EndSection |
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|
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=================================================== |
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|
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In former times it was possible to insert these informations into |
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/etc/X11/xorg.conf. But I'm not sure if this still works nowadays, |
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in particular the Modeline definition. |
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|
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But maybe you can see if something is wrong with the EDID data of |
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your monitor. |
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|
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I could also provide you the EDID data from my monitor. Maybe you |
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can use it with the DRM_LOAD_EDID_FIRMWARE kernel option. But this |
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is just an idea. I have no clue how to do this in detail. :-) |
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|
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P.S.: |
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When you have only tried x11-drivers/xf86-video-ati then you should |
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also try x11-drivers/xf86-video-amdgpu. Maybe this driver works |
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better with your monitor. |
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|
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-- |
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Regards |
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wabe |
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