monitor 205BW has strange flickering in half top with xorg-server <=1.4 and xf86-video-intel >=2.0.0 Suspect DDC problems like 225BW, maybe workaround needed in Xf86EdidModes.c or somewhere else Turning off DDC (Option "NoDDC") results in strange resolutions, no way to get correct 1680x1050
Xorg.0.log with Option "ModeDebug" "YES" in your driver section required to actually help. Output of xrandr --verbose may also help.
Created attachment 11606 [details] xorg.0.log as requested xorg.0.log as requested
Created attachment 11607 [details] xrandr --verbose output xrandr --verbose output as requested Thank you for assistence :)
Your log shows you getting the correct mode detected and chosen for your monitor. You should also be getting an appropriate clock chosen I think. Not sure what's going on here, but DDC seems fine. Can you describe the flicker better? Is it happening on a bare X Server?
It happens on clean Xserver, on kde, on gnome... Flickering is just flickering,the window "vibrate" like my frequencies are wrongs in top half of my screen (or 1/3 top) All clear with <2.* drivers
we happen have this monitor. IIRC, though we have some issue with it, but didn't see this weird behavor... re-assign to Hong.
ask me whatever you need and I will post it... I'm currently stuck with 1.7.4 driver because of this flickering with >=2.0
(In reply to comment #8) > ask me whatever you need and I will post it... I'm currently stuck with 1.7.4 > driver because of this flickering with >=2.0 > what is your monitor saying about the mode (there should be somewhere in your monitor OSD menu). Thanks, Hong
On my OSD info: with 1.7.4 driver Analog 65KHz 60Hz PP 1680x1050 Kilohertz changes randomly every time I boot up, sometimes is 65, sametimes is 64.7 but no problem at all With 2.0 driver Analog 64.7KHz 60Hz NP 1680x1050 Every time 64.7 with 2.0 driver, but I don't know what this "NP" means
(In reply to comment #10) > On my OSD info: > > with 1.7.4 driver > > Analog > 65KHz 60Hz PP > 1680x1050 > > Kilohertz changes randomly every time I boot up, sometimes is 65, sametimes is > 64.7 but no problem at all > > With 2.0 driver > > Analog > 64.7KHz 60Hz NP > 1680x1050 > > Every time 64.7 with 2.0 driver, but I don't know what this "NP" means > PP: +hsync +vsync NP: -hsync +vsync Seems we need to add a quirk to your monitor. Would you please add a new modeline and try if it works? #xrandr --newmode 1680x1050_60 146.2 1680 1784 1960 2240 1050 1053 1059 1089 +hsync +vsync #xrandr --addmode VGA 1680x1050_60 #xrandr --output VGA --mode 1680x1050_60 (The only change of this mode is use +hsync.) Thanks, Hong
still no luck :( sovereign flocchini # xrandr --newmode 1680x1050_60 146.2 1680 1784 1960 2240 1050 1053 1059 1089 +hsync +vsync X Error of failed request: BadName (named color or font does not exist) Major opcode of failed request: 156 (RANDR) Minor opcode of failed request: 16 () Serial number of failed request: 16 Current serial number in output stream: 16 sovereign flocchini # xrandr --addmode VGA 1680x1050_60 sovereign flocchini # xrandr --output VGA --mode 1680x1050_60 I paste exactly what you wrote, as user or root, flicker remains and my osd info now shows: Analog 65KHz 60Hz NN 1680x1050 Not the expected "PP" I also tried to change to -hsync -vsync (same flicker problem, NN) and +hsync -vsync. With +hsync -vsync I only get 1400x1050, no flicker, PN, but if I force it to 1680x1050 (xrandr -s 1680x1050) flicker returns
For whatever reasons using xrandr doesn't work for you. I suggest to add the modeline manually to Section "Modes" of your /etc/X11/xorg.conf. # 1680x1050 @ 60.00 Hz (CVT) # field rate 59.95 Hz; hsync: 65.29 kHz; pclk: 146.25 MHz Modeline "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050 1053 1059 1089 +HSync +Vsync ("Modeline..." is one line; stupid Bugzilla!) Then make sure that your Section "Monitor" is referenced properly in Section "Device". And that Section "Modes" is again referenced in Section "Monitor". Something like this. Section "Monitor" Identifier "Monitor[0] [...] UseModes "Modes[0]" EndSection Section "Modes" Identifier "Modes[0]" [...] # must be one line! Modeline "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050 1053 1059 1089 +HSync +Vsync EndSection Section "Device" [...] Option "monitor-VGA" "Monitor[0]" [...] EndSection
it doesn't work. I still get flickering and my osd still shows Analog 64.7KHz 60Hz NP 1680x1050
Well, I forgot one important thing. Add the ""1680x1050_60.00" mode to the appropriate Subsection of Section "Screen".
wooooooooooow now it works! :D I didn't notice previous mistake in xorg.conf because I usually define modeline in different way instead of your "Modes" section. I checked and even modifying my standard xorg.con works like a charm. My current Monitor section: Section "Monitor" # Block type: 2:0 3:fd # Block type: 2:0 3:fc Identifier "Desktop Monitor" Option "DPMS" VendorName "SAM" ModelName "SyncMaster" DisplaySize 433 270 # Block type: 2:0 3:fd HorizSync 30-81 VertRefresh 56-75 # Max dot clock (video bandwidth) 160 MHz # Block type: 2:0 3:fc # Block type: 2:0 3:ff # DPMS capabilities: Active off:yes Suspend:no Standby:no Mode "1680x1050" # vfreq 59.954Hz, hfreq 65.290kHz DotClock 146.250000 HTimings 1680 1784 1960 2240 VTimings 1050 1053 1059 1089 Flags "+HSync" "+VSync" EndMode # Block type: 2:0 3:fd # Block type: 2:0 3:fc # Block type: 2:0 3:ff Option "PreferredMode" "1680x1050" Option "DPMS" Option "NoDDC" Option "ModeValidation" "NoMaxPClkCheck" EndSection Thank you all very much
The inf file provided by Samsung for windows has this in it: [SM205BWa.AddReg] HKR,"MODES\1680,1050",Mode1,,"30-81,56-75,+,+" HKR,,ICMProfile,0,"SM205BW.icm" [SM205BWd.AddReg] HKR,"MODES\1680,1050",Mode1,,"30-81,56-75,+,+" HKR,,ICMProfile,0,"SM205BW.icm Any hint we can get from it?
(In reply to comment #17) > The inf file provided by Samsung for windows has this in it: > > [SM205BWa.AddReg] > HKR,"MODES\1680,1050",Mode1,,"30-81,56-75,+,+" > HKR,,ICMProfile,0,"SM205BW.icm" > > [SM205BWd.AddReg] > HKR,"MODES\1680,1050",Mode1,,"30-81,56-75,+,+" > HKR,,ICMProfile,0,"SM205BW.icm > > Any hint we can get from it? > It seems the 1680x1050 mode of this monitor always requires +hsync +vsync.
Created attachment 12379 [details] [review] patch to try Please try the attached patch which added a quirk to the samsung 205BW monitor to use +h +v for the edid detailed mode. Your monitor should work without the modeline hack to xorg.conf. Thanks, Hong
works on xorg 7.3 (xorg-server 1.4-r1) ;)
mark fixed.
reopen for discussion, as the patch was reverted from tip...
Oh, this one was not about flipping polarities, just setting both to positive. Re-commit it, I guess.
(In reply to comment #23) > Oh, this one was not about flipping polarities, just setting both to positive. > Re-commit it, I guess. > Eric, can you help to commit it to xorg? I don't have the commit right. Thanks, Hong
patch pushed, close this one.
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