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Old 01-17-2022, 02:58 PM   #1216
Gemini83
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Device: Kobo Glo HD N437
Kobo Glo HD has a display problem that prevents use
I have a strange problem on my kobo glo HD The screen display seems larger than the physical screen. I have tried everything, but now I just have to find a kobo glo HD N437 image to try to burn a new SD card.
Thank you for your work which has been very helpful in my troubleshooting attempts.
Could someone provide me with an image?
Sincerely
Gemini83
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Old 01-17-2022, 06:18 PM   #1217
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Quote:
Originally Posted by Gemini83 View Post
I have a strange problem on my kobo glo HD The screen display seems larger than the physical screen. I have tried everything, but now I just have to find a kobo glo HD N437 image to try to burn a new SD card.
Thank you for your work which has been very helpful in my troubleshooting attempts.
Could someone provide me with an image?
That looks like the device has gotten confused about whether it is a Glo HD or Touch 2. These are very similar in the hardware and there is a test when booting that checks which it is and sets a flag. As it is drawing the screen to large, then it probably means the firmware thinks the device is a Touch 2.

Are you sure it is a Glo HD? I know it seems to be a silly question, but, there have been plenty of people who swear they have one device, but, it turns out to be another. The model name is on the end of the device with the USB port.

Have you powered off? Or a factory reset may solve it. I would do the full factory reset via the Developers option menu or during the startup. And I have sent a PM with the link to the image if you need to use it.
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Old 01-18-2022, 09:16 AM   #1218
Gemini83
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Yes it is a Kobo Glo HD, I installed the firmware, but it didn't fix the size problem. it must be a hardware problem. I will continue my research. Thanks again davidfor for your help
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Old 01-18-2022, 06:45 PM   #1219
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Quote:
Originally Posted by Gemini83 View Post
Yes it is a Kobo Glo HD, I installed the firmware, but it didn't fix the size problem. it must be a hardware problem. I will continue my research. Thanks again davidfor for your help
Weird. To get some information, can you try running a command? This needs you to use telnet to get to the device.

To enable telnet on the device, you need to enable developers mode. This is done by opening the search, setting the search location to "My Books" and entering "devmodeon". You don't need to press the go button.

Then, connect to the WiFi. You need the IP address of the device for telnet. You can get that from the Device information page of the settings, but, I'm not sure if you can get to that. Your WiFi router should show it in its settings.

I'm skipping how to use telnet. If you have used it, you know. If you haven't, either ask or look on the internet for you OS. But, the username is "root" and there is no password.

Once you can telnet in, the commands to run, with the result I see on my Glo HD are:

Code:
[root@kobo ~]# ntx_hwconfig -s -p /dev/mmcblk0 PCB
NtxHwCfg_GetCfgFldStrVal:[WARNING]Config version too old !! Please update config file !!
E60Q90
[root@kobo ~]
Code:
[root@kobo ~]# ntx_hwconfig -s -p /dev/mmcblk0 DisplayResolution
NtxHwCfg_GetCfgFldStrVal:[WARNING]Config version too old !! Please update config file !!
1448x1072
From the screenshot, I am expect to see the result of this as "800x600". That would explain why you are getting the wrong screen resolution. Why that is happening is another thing.

Has this just started happening? Or is it a device you have bought second hand? If it started recently, what happened just before it started?
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Old 01-19-2022, 08:06 AM   #1220
Gemini83
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Hello,
Being a technical enthusiast, I had the opportunity to install the DDWRT system on different platforms like FONERA WRT54 and others. A friend of mine gave me the tablet so that I could have fun solving the problem. Being curious by nature I jumped on it, I opened the partitions on Linux to see how it was built.
For now, with the new image, it's the same display problem. Also the touchpad does not match the display. I can choose the language by clicking above and to the right of the choice, but impossible to pass the choice of wifi or no wifi and therefore impossible to switch to developer mode.
Next step as soon as I have vacations and therefore time, create a POGO connector, and go through the serial link.
I will keep you informed of the progress.
Thanks for your help.
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Old 01-20-2022, 12:45 AM   #1221
Gemini83
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Hello,
I couldn't wait for the vacations, curiosity got the better of me.
The values of ntx_hwconfig match. The problem seems more complicated than expected.
I went to search in the configuration files, but nothing seemed wrong.
Sincerely

https://www.mobileread.com/forums/at...1&d=1642657473
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Old 01-20-2022, 01:21 AM   #1222
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Quote:
Originally Posted by Gemini83 View Post
Hello,
I couldn't wait for the vacations, curiosity got the better of me.
The values of ntx_hwconfig match. The problem seems more complicated than expected.
I went to search in the configuration files, but nothing seemed wrong.
Sincerely

https://www.mobileread.com/forums/at...1&d=1642657473
That agrees with my Glo HD. But, I don't know where it gets the resolution from. I don't know if it is querying the screen some how or if it is burnt in somewhere else. If it is the latter, it could be that the wrong screen is in the device. The only time I seen something like that was for someone who replaced a screen and got the wrong one. And that makes me wonder about the history of the device. And this problem.

If you want to try something, you could edit the file "/etc/bin/kobo_config.sh". This has the following line:

Code:
	E60Q9*) [ "$RES" == "800x600" ] && echo pika || echo alyssum;;
"pika" is the Touch 2 and "alyssum" is the Glo HD. Changing that to "pika" in both places might get it booting to use the screen as 800x600. But, I don't know if everything respects that setting. It is used in parts of the booting and factory reset, but, the screen size might be checked by nickel directly when it starts. If it works, it works. At the worst, you might have to do a factory reset.
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Old 01-21-2022, 03:49 AM   #1223
rickspring
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Quote:
Originally Posted by davidfor View Post
PM sent.
Hi Davidfor could you please send me a img dump from the Kobo Glo HD to me? I tried to downgrade the device and got it bricked. . Thanks in advance!
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Old 01-21-2022, 05:48 AM   #1224
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@rickspring: You need to enable Private Messaging. This is in the "Edit Options" of the control panel. If this isn't there, it has to be added somehow. You can try posting in https://www.mobileread.com/forums/sh...d.php?t=319819 to ask it to be enabled, or contact a moderator.
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Old 01-21-2022, 06:04 AM   #1225
rickspring
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Quote:
Originally Posted by davidfor View Post
@rickspring: You need to enable Private Messaging. This is in the "Edit Options" of the control panel. If this isn't there, it has to be added somehow. You can try posting in https://www.mobileread.com/forums/sh...d.php?t=319819 to ask it to be enabled, or contact a moderator.
Thanks for your reply Davidfor! I just asked an admin to allow PM for me. I am waiting for his help.
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Old 01-26-2022, 07:04 AM   #1226
nstr
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My Glo HD is not starting anymore!!

Is the OS running on the SD?

Please can someone send me the backup image of the SD?

Thanks
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Old 01-26-2022, 07:19 AM   #1227
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PM sent.
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Old 02-04-2022, 05:25 PM   #1228
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Hi there,

I think I finally bricked my Glo HD by patching the firmware. It's now stuck in a loop where it starts, but then freezes, and I can't get it to perform a factory reset. I suppose I'll need to flash the SD card (unless loading the non-patched KoboRoot.tgz on the card does the trick). Could someone PM me an image ? Thanks !
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Old 02-04-2022, 08:29 PM   #1229
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PM sent. But, read my reply to your other post first.
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Old 02-06-2022, 07:22 AM   #1230
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Can someone send me the image for kobo glo hd?
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