Screen Turns Magenta...

[leepage@eml.cc]

Hello,

Once a week, the screen on my wife's N2 (Ubuntu 18.04.5 LTS) turns magenta when blanking. If you move the mouse, then it looks like one of the CRT's guns has died - except it is an LCD display. Once I reboot the machine, it is fine for about another week. I can force the same issue if I tell the power manager to turn off the display if idle.

I believe this is the log entry pertaining to the failure:

Code: Select all

Feb 27 14:03:01 localhost anacron[21313]: Anacron 2.3 started on 2021-02-27
Feb 27 14:03:01 localhost anacron[21313]: Normal exit (0 jobs run)
Feb 27 14:36:24 localhost kernel: [570505.316080@0] fb: osd[0] enable: 0 (Xorg)
Feb 27 14:36:29 localhost kernel: [570510.190484@0] hdmitx: system: irq 80000004 0
Feb 27 14:36:29 localhost kernel: [570510.238829@0] hdmitx: system: plugout
Feb 27 14:36:29 localhost kernel: [570510.238868@0] hdmitx: system: update physcial size: 16 9
Feb 27 14:36:29 localhost kernel: [570510.818140@0] hdmitx: system: irq 80000002 0
Feb 27 14:36:30 localhost kernel: [570511.326766@0] hdmitx: system: plugin
Feb 27 14:36:30 localhost kernel: [570511.458027@0] hdmitx: edid: EDID Parser:
Feb 27 14:36:30 localhost kernel: [570511.458038@0] hdmitx: edid: get dtd0 vic: 16
Feb 27 14:36:30 localhost kernel: [570511.458048@0] hdmitx: edid: get dtd1 vic: 16
Feb 27 14:36:30 localhost kernel: [570511.458050@0] hdmitx: edid: find IEEEOUT
Feb 27 14:36:30 localhost kernel: [570511.458071@0] hdmitx: edid: check sum valid
Feb 27 14:36:30 localhost kernel: [570511.458072@0] hdmitx: edid: check sum valid
Feb 27 14:36:30 localhost kernel: [570511.458075@0] hdmitx: edid: update rx hdr info 0 at edid parsing
Feb 27 14:36:30 localhost kernel: [570511.458078@0] hdmitx: edid: check sum valid
Feb 27 14:36:30 localhost kernel: [570511.458080@0] hdmitx: edid: check sum valid
Feb 27 14:36:30 localhost kernel: [570511.458083@0] hdmitx: edid: blk0 raw data
Feb 27 14:36:30 localhost kernel: [570511.458106@0] hdmitx: edid: 
Feb 27 14:36:30 localhost kernel: [570511.458106@0] 00ffffffffffff005a6332c1010101011d1d0103803c22782e2235a3594d9c28
Feb 27 14:36:30 localhost kernel: [570511.458106@0] 135054bfef80b300a940a9c0950090408180814081c0023a801871382d40582c
Feb 27 14:36:30 localhost kernel: [570511.458106@0] 450056502100001e000000ff005557333139323936313033370a000000fd0032
Feb 27 14:36:30 localhost kernel: [570511.458106@0] 4b185211000a202020202020000000fc005641323731392053657269657301d3
Feb 27 14:36:30 localhost kernel: [570511.458106@0] 
Feb 27 14:36:30 localhost kernel: [570511.458106@0] 
Feb 27 14:36:30 localhost kernel: [570511.458108@0] hdmitx: edid: blk1 raw data
Feb 27 14:36:30 localhost kernel: [570511.458130@0] hdmitx: edid: 
Feb 27 14:36:30 localhost kernel: [570511.458130@0] 020322f14c9005040302071f141312160123097f078301000068030c00100020
Feb 27 14:36:30 localhost kernel: [570511.458130@0] 0000023a801871382d40582c450056502100001e011d8018711c1620582c2500
Feb 27 14:36:30 localhost kernel: [570511.458130@0] 56502100009e011d007251d01e206e28550056502100001e8c0ad08a20e02d10
Feb 27 14:36:30 localhost kernel: [570511.458130@0] 103e9600565021000018023a80d072382d40102c458056502100001e00000054
Feb 27 14:36:30 localhost kernel: [570511.458130@0] 
Feb 27 14:36:30 localhost kernel: [570511.458130@0] 
Feb 27 14:36:30 localhost kernel: [570511.458134@0] hdmitx: system: update physcial size: 600 340
Feb 27 14:36:30 localhost kernel: [570511.458135@0] hdmitx: video: Sink is HDMI device
Feb 27 14:36:30 localhost kernel: [570511.458142@0] hdmitx: hdmitx: display colourdepth was 10 in cur_param 0xffffff800a6e6af0 (VIC: 130)
Feb 27 14:36:30 localhost kernel: [570511.458144@0] hdmitx: system: get current mode: custombuilt
Feb 27 14:36:30 localhost kernel: [570511.458146@0] hdmitx: system: update rx hdr info 0
Feb 27 14:36:30 localhost kernel: [570511.458147@0] hdmitx: system: update physcial size: 600 340
Feb 27 14:36:30 localhost kernel: [570511.458168@0] hdmitx: hdmitx: display colourdepth is 10 in cur_param 0xffffff800a6e6af0 (VIC: 130)
Feb 27 14:36:30 localhost kernel: [570511.458189@0] hdmitx: video: already init VIC = 0  Now VIC = 130
Feb 27 14:36:30 localhost kernel: [570511.458193@0] hdmitx: hw: div40: 0
Feb 27 14:36:30 localhost kernel: [570511.484738@0] hdmitx: ddc w1b error 0x54 0x20 0x00
Feb 27 14:36:30 localhost kernel: [570511.484750@0] hdmitx: this mode doesn't have frac_rate
Feb 27 14:36:30 localhost kernel: [570511.484752@0] hdmitx: frac_rate = 1
Feb 27 14:36:30 localhost kernel: [570511.484755@0] hdmitx: hdmitx: set clk: VIC = 130  cd = 5  cs = 2 frac_rate = 1
Feb 27 14:36:30 localhost kernel: [570511.484757@0] hdmitx: Not find VIC = 130 for hpll setting
Feb 27 14:36:30 localhost kernel: [570511.487794@0] hdmitx: hw:  config hdmitx IP vic = 130 cd:5 cs: 2
Feb 27 14:36:30 localhost kernel: [570511.514899@0] hdmitx: system: irq 80000001 0
Feb 27 14:36:30 localhost kernel: [570511.618946@0] hdmitx: [0x10000104]: 0x00000001
Feb 27 14:36:30 localhost kernel: [570511.618958@0] hdmitx: [0x10000180]: 0x000000ff
Feb 27 14:36:30 localhost kernel: [570511.618962@0] hdmitx: [0x10000181]: 0x000000ff
Feb 27 14:36:30 localhost kernel: [570511.618967@0] hdmitx: [0x10000182]: 0x00000003
Feb 27 14:36:30 localhost kernel: [570511.618971@0] hdmitx: [0x10000183]: 0x00000007
Feb 27 14:36:30 localhost kernel: [570511.618975@0] hdmitx: [0x10000184]: 0x0000003f
Feb 27 14:36:30 localhost kernel: [570511.618979@0] hdmitx: [0x10000185]: 0x00000002
Feb 27 14:36:30 localhost kernel: [570511.618983@0] hdmitx: [0x10000187]: 0x000000ff
Feb 27 14:36:30 localhost kernel: [570511.618987@0] hdmitx: [0x10000188]: 0x00000003
Feb 27 14:36:30 localhost kernel: [570511.622053@0] hdmitx: video: Sink is HDMI device
Feb 27 14:36:30 localhost kernel: [570511.622083@0] hdmitx: hw: set audio
Feb 27 14:36:30 localhost kernel: [570511.622093@0] hdmitx: hw: hdmitx tx_aud_src = 0
Feb 27 14:36:30 localhost kernel: [570511.622109@0] hdmitx: fs = 2, cd = 4, tmds_clk = 148500
Feb 27 14:36:30 localhost kernel: [570511.622114@0] hdmitx: hw: aud_n_para = 6272
Feb 27 14:36:30 localhost kernel: [570511.622124@0] hdmitx: hw: set channel status
Feb 27 14:36:30 localhost kernel: [570511.622156@0] hdmitx: audio: Audio Type: PCM
Feb 27 14:36:30 localhost kernel: [570511.622160@0] hdmitx: hw: set audio
Feb 27 14:36:30 localhost kernel: [570511.622163@0] hdmitx: hw: hdmitx tx_aud_src = 0
Feb 27 14:36:30 localhost kernel: [570511.622177@0] hdmitx: fs = 2, cd = 4, tmds_clk = 148500
Feb 27 14:36:30 localhost kernel: [570511.622181@0] hdmitx: hw: aud_n_para = 6272
Feb 27 14:36:30 localhost kernel: [570511.622190@0] hdmitx: hw: set channel status
Feb 27 14:36:30 localhost kernel: [570511.622222@0] hdmitx: audio: Audio Type: PCM
Feb 27 15:04:46 localhost systemd[1]: Started Run anacron jobs.

I've swapped out displays, so it doesn't appear to be a display issue.

Any ideas as to what's going wrong?

Thanks!

[mad_ady]

Seems like it detects hdmi has been unplugged and then replugged. Could you check that the cable is attached correctly and maybe test with a different cable?
You could also try setting disable_hpd to true (or 1, I don't remember) in boot.ini

[leepage@eml.cc]

I just implemented that. I'll know in a week whether that fixed it or not.

Thank you!

[leepage@eml.cc]

Hi.

I made the change, and changed out the HDMI cable for good measure. Then I made the power manager turn off the display.

It did the same thing.

At this point, I'm guessing it is a hardware issue. My N2 has the same OS as my wife's. They're both N2s. And, short of re-imaging her root partition, the only thing I haven't done is to swap out the N2.

Thoughts?

[odroid]

Have you tried changing disablehpd=true option by editing boot.ini or config.ini file?

It is also very worth to try the latest Ubuntu 20.04.2 LTS image to narrow down root causes too.
https://wiki.odroid.com/odroid-n2/os_im ... u/20210223

[leepage@eml.cc]

Hi odroid. Yes, I tried setting disablehpd=true, but that didn't help.

I'll try the upgrade and see. Thanks for the idea.

[bk_XU_AZ]

I know this is a weird question: Is it an LG monitor?

[leepage@eml.cc]

No. Currently, it is a ViewSonic. And I've swapped out the monitor previously as well.

I'm guessing you've had some issues with LG...

[bk_XU_AZ]

Yes, I had what sounded like the identical issue. I typically love LG's IPS displays, on phones, tablets, laptops and monitors- except this time. I returned it, thankfully. BUT- next time this happens, try going into the monitor's menu while it's acting up (if you can), and change the gamma (a little or a lot) and see if it instantly improves. That worked for the LG (oddly enough), then I'd put it back to where it was and it would work through a few more sleep cycles and happen again. One gamma setting was the worst, but none were trouble free with that monitor. I got an Acer at Costco (also IPS) for $99, and I liked it so much we got another one so my wife could have two monitors.

[leepage@eml.cc]

I'll give that a try. That's odd that changing gamma would "fix" it.