Redmi 9 Kernel

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Paul

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Aug 5, 2024, 10:29:02 AM8/5/24

to supptherpaymes

Soit shouldn't be a problem unless they're running around clicking the force checkbox from the start. (In which case they'll get a non-bootable system until they follow the vendor recovery or reflash from serial input)

I mean, I know I could revert back to factory firmware and install 23.05.x over the factory firmware, but I am wondering if there would be a simpler way to install 23.05.x over the new chained u-boots layout.

Anyway I was wondering what would happen if I apply a 23.05.x sysupgrade.bin via sysupgrade command (or via LuCI). Since the new image has the kernel+rootfs in UBI format (sysupgrade.ubi), and the previous image has kernel in a fixed size partition and only rootfs in UBI (sysupgrade.bin), I am trying to discover if it would work or not (I know it can softbrick my device, that's I'm trying to confirm here).

As expected. OpenWrt usually does not switch kernel versions within a stable release (23.05.2 -> 23.05.3 for example). Only kernel patches are applied on newer releases of a given stable version. A newer LTS kernel version (6.1) is already available in the snapshot releases for the AX6S as discussed above in this topic and it will be included in the next major stable release (24.x).

When I upgraded from 23.05.2 to snaphot via dd method, the configurations were kept, but when the device came up the configurations were all wrong (for example, it was showing 3 wifi radios instead of the expected 2 radios, and none was working).

GSI installation on Redmi 7A is very particular because I used the /e/ Q GSI which is arm64 while Redmi 7A is arm32 binder 64. In fact, Redmi 7A have an 64 bit processor but the kernel included with it is only 32 bit, so we have to change the kernel to a 64 bit one (like the one of Redmi 8A which have the same processor !)

I think it may be due to some change with the systemd services added in version 550 because that is when it happens the most. It has already happened to me twice when I am updating the system and it breaks it because the update cannot be completed. In the video it happens when the specific hooks are being processed (reloading system manager configuration).

I use endeavourOS(with kde) too on a lenovo legion 5(15h6h w/amd5600h+rtx3060) and can confirm random freezing on desktop use (currently ever since updating from 545 from nvidia-lts package i cannot also get nvidia to deep sleep which could affect stability?), REISUB works at least, when using nvidia-550 so i decided to wait for it and revert to 545, hope it gets fixed or else could be just distro specific.

If needed i can revert to back to nvidia-550 and fill bug report, for now i leave mine from 545:

nvidia-bug-report.log.gz (3.4 MB)

Other cases:

I found it to happen randomly, or just when chaining platform profiles.

Sometimes just when rebooting/powering off the machine, or randomly while booting/on the login screen.

It even happens when the GPU is not in use, powered off, on battery.

But this issue happens randomly, i just now did again and it did not happen, but in contrast e.g: the other day when i had vscode open, the app froze, then only mouse was working and then froze the system, REISUB worked still.

The trigger to cause the freeze is not consistent. The most reliable way to trigger it seems to be inserting / removing a USB-C cable which connects a single external monitor to the laptop. When the freeze starts to happen, I can move the mouse around sometimes but the UI does not respond and eventually the mouse cursor does not move anymore. There does not seem to be any correlation between the freeze and the applications which are running when it happens.

After this 2nd hang occurred, I booted the system one more time (2 minutes after the 2nd hard shutdown). 12 minutes later I performed a normal shutdown in the KDE start menu and this is where things got interesting. The system hung with a black screen pretty much immediately and would not respond to any user input.

I left it running overnight and did a hard shutdown in the morning to see what it would log overnight, but when checking the journal log today there was nothing logged past 1 second after the shutdown was initiated. Below is the complete journal log from this instance of hanging and the subsequent boot entry this evening

Same symptoms, same 550 driver, likewise the error appears in both X11 and Wayland, likewise the kernel panic stack starts with the __die function, likewise happens most often when shutting down/rebooting the laptop

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