@KrzyPacu Can you look at your full dmesg output (no filter on tm16xx)? I guess there are some other error messages prior to there filtered output. I don't think that you have a different controller. Maybe rather the pinout: which pins of the SoC of your TV box are wired to the controller and how they are declared in the device tree. Was your display working properly with the OpenVFD driver and the hk1-x3.conf VFD configuration file you posted? If so, the controller is good and it's probably the pin numbers described in the device tree that needs to be adjusted. My hk1-x3.dtso was converted from the OpenVFD configuration file, but the device hasn't been tested yet to my knowledge. So it might need some corrections.

@junji. Can you explain me how you proceed to boot this OS image Armbian-unofficial_25.05.0-trunk_X96q-lpddr3-v1-3_bookworm_edge_6.12.11_xfce_desktop.img.xz ?

I have same hardware issue here. Did you fix this problem?

For a few weeks I've been using the latest official release from May 26, 2025, running just fine from my NVME drive. But then I turned it on and at the screen where you get the Amrbian grey/red logo in the middle of the screen and the spinning circle, it went no further. The spinning circle would either stop rotating or disappear after a minute or so. I can SSH into the device. But when I use remote desktop from a Windows PC, the full and functioning desktop is there. It's just not on my TV screen any more. I've done the usual HDMI cable testing and powering off the TV completely, but no change. The fact that the desktop is accessible remotely does indicate that it must be loading in some fashion. Took a log here: https://paste.next.armbian.com/qococumoga

# make -j 4 make -C /lib/modules/6.12.33-current-meson64/build M=/home/INSTALKI/linux_openvfd/driver modules make[1]: Enter the directory '/usr/src/linux-headers-6.12.33-current-meson64' CC [M] /home/INSTALKI/linux_openvfd/driver/protocols/i2c_sw.o CC [M] /home/INSTALKI/linux_openvfd/driver/protocols/i2c_hw.o CC [M] /home/INSTALKI/linux_openvfd/driver/protocols/spi_sw.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/dummy.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/seg7_ctrl.o /home/INSTALKI/linux_openvfd/driver/controllers/seg7_ctrl.c:11:6: warning: no previous prototype for ‘transpose8rS64’ [-Wmissing-prototypes] 11 | void transpose8rS64(unsigned char* A, unsigned char* B) { | ^~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/controllers/seg7_ctrl.c:40:8: warning: no previous prototype for ‘seg7_write_display_data’ [-Wmissing-prototypes] 40 | size_t seg7_write_display_data(const struct vfd_display_data *data, unsigned short *raw_wdata, size_t sz) | ^~~~~~~~~~~~~~~~~~~~~~~ CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/fd628.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/fd650.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/hd44780.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/gfx_mono_ctrl.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/ssd1306.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/pcd8544.o /home/INSTALKI/linux_openvfd/driver/controllers/gfx_mono_ctrl.c:239:6: warning: no previous prototype for ‘transpose_buffer’ [-Wmissing-prototypes] 239 | void transpose_buffer(unsigned char *buffer, const struct rect *rect) | ^~~~~~~~~~~~~~~~ CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/il3829.o CC [M] /home/INSTALKI/linux_openvfd/driver/openvfd_drv.o /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:44:7: warning: "CONFIG_AMLOGIC_LEGACY_EARLY_SUSPEND" is not defined, evaluates to 0 [-Wundef] 44 | #elif CONFIG_AMLOGIC_LEGACY_EARLY_SUSPEND | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c: In function ‘register_openvfd_driver’: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:400:75: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] 400 | pr_dbg("%s: Succeeded to add openvfd module \n", __func__); | ^ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c: At top level: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:622:19: warning: no previous prototype for ‘gpiochip_find’ [-Wmissing-prototypes] 622 | struct gpio_chip *gpiochip_find(void *data, | ^~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:669:5: warning: no previous prototype for ‘evaluate_pin’ [-Wmissing-prototypes] 669 | int evaluate_pin(const char *name, const unsigned int *vfd_arg, struct vfd_pin *pin, unsigned char enable_skip_evaluation) | ^~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:752:6: warning: no previous prototype for ‘get_pin_from_dt’ [-Wmissing-prototypes] 752 | void get_pin_from_dt(const char *name, const struct platform_device *pdev, struct vfd_pin *pin) | ^~~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:763:5: warning: no previous prototype for ‘request_pin’ [-Wmissing-prototypes] 763 | int request_pin(const char *name, struct vfd_pin *pin, unsigned char enable_skip) | ^~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:1034:19: error: initialization of ‘void (*)(struct platform_device *)’ from incompatible pointer type ‘int (*)(struct platform_device *)’ [-Werror=incompatible-pointer-types] 1034 | .remove = openvfd_driver_remove, | ^~~~~~~~~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:1034:19: note: (near initialization for ‘openvfd_driver.<anonymous>.remove’) /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c: In function ‘print_param_debug’: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:611:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=] 611 | } | ^ cc1: some warnings being treated as errors make[3]: *** [scripts/Makefile.build:229: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.o] Error 1 make[2]: *** [/usr/src/linux-headers-6.12.33-current-meson64/Makefile:1945: /home/INSTALKI/linux_openvfd/driver] Error 2 make[1]: *** [Makefile:224: __sub-make] Error 2 make[1]: Leaving the directory '/usr/src/linux-headers-6.12.33-current-meson64' make: *** [Makefile:5: modules] Error 2 I'm trying to compile the "openvfd" driver but the compilation ends with an error. I'm a complete noob at these things and I really want this driver so I'd be very grateful for any help.