Ongoing HDMI limited compatability
#20
(04-20-2016, 06:24 AM)tkaiser Wrote:
(04-20-2016, 05:49 AM)rahlquist Wrote: cat: graphics/fb0/modes: No such file or directory

These are relative paths, most likely relative to /sys/class (don't know -- booted the Pine64 a few weeks ago the last time). You might succeed doing a 'find /sys -type d -name fb0' to know the prefix needed to chdir to or create absolute paths.

Thanks, when acting as 'smart hands' and troubleshooting using instructions from another person I tend to be terribly literal. Using the info you provided;

Code:
root@localhost:~# find /sys -type d -name fb0
/sys/devices/soc.0/1000000.disp/graphics/fb0
root@localhost:~# cat /sys/devices/soc.0/1000000.disp/graphics/fb0/modes
U:1920x1080p-0
Decided to get a bit more info using another method. I hooked my pi to the monitor and pulled EDID info. 
Code:
root@raspberrypioldpi:~# tvservice -s
state 0x120006 [DVI DMT (57) RGB full 16:10], 1680x1050 @ 60.00Hz, progressive
root@raspberrypioldpi:~# tvservice -m DMT
Group DMT has 4 modes:
          mode 4: 640x480 @ 60Hz 4:3, clock:25MHz progressive
          mode 9: 800x600 @ 60Hz 4:3, clock:40MHz progressive
          mode 16: 1024x768 @ 60Hz 4:3, clock:65MHz progressive
 (prefer) mode 57: 1680x1050 @ 60Hz 16:10, clock:119MHz progressive
root@raspberrypioldpi:~# tvservice -m CEA
Group CEA has 7 modes:
          mode 1: 640x480 @ 60Hz 4:3, clock:25MHz progressive
          mode 2: 720x480 @ 60Hz 4:3, clock:27MHz progressive
          mode 3: 720x480 @ 60Hz 16:9, clock:27MHz progressive
 (native) mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive
          mode 5: 1920x1080 @ 60Hz 16:9, clock:74MHz interlaced
          mode 6: 720x480 @ 60Hz 4:3, clock:27MHz x2 interlaced
          mode 7: 720x480 @ 60Hz 16:9, clock:27MHz x2 interlaced
Thats the simple stuff, attached is the output of;
Code:
root@raspberrypioldpi:~# tvservice -d edid.dat
Written 256 bytes to edid.dat
root@raspberrypioldpi:~# edidparser edid.dat > edid.txt
Also adding full pi serial console boot log.

Code:
root@raspberrypioldpi:~# cat /sys/devices/platform/soc/soc:fb/graphics/fb0/modes
U:1680x1050p-0


ATTENTION Moderator Note

Forum doesn't allow upload of files with the extension .log seriously? Might what to address that lol.

Have edited kernel startup params as some others have mentioned no luck 

Kernel command line: console=tty0 console=ttyS0,115200n8 no_console_suspend,disp.screen0_output_mode=EDID:1280x720p60, earlycon=uart,mmio32,0x01c28000 mac_addr=7a:6e:63:ac:21:f1 root=/dev/mmcblk0p2 ro rootwait


Attached Files
.txt   edid.txt (Size: 3.7 KB / Downloads: 162)
.txt   putty20160420093457.txt (Size: 16.37 KB / Downloads: 140)


Messages In This Thread
Ongoing HDMI limited compatability - by rahlquist - 04-19-2016, 07:21 AM
RE: Ongoing HDMI limited compatability - by Jasu - 04-24-2016, 04:50 AM
RE: Ongoing HDMI limited compatability - by rahlquist - 04-20-2016, 06:47 AM
RE: Ongoing HDMI limited compatability - by tllim - 04-20-2016, 08:08 AM
RE: Ongoing HDMI limited compatability - by tllim - 04-21-2016, 11:59 PM
RE: Ongoing HDMI limited compatability - by tllim - 04-21-2016, 03:35 PM
RE: Ongoing HDMI limited compatability - by tllim - 04-21-2016, 03:37 PM
RE: Ongoing HDMI limited compatability - by tllim - 04-22-2016, 12:02 AM
RE: Ongoing HDMI limited compatability - by tllim - 04-25-2016, 12:42 AM
RE: Ongoing HDMI limited compatability - by tllim - 12-27-2016, 11:45 PM

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