I have this problem for a long while after the installation of Ubuntu 22.04 in my notebook. If I’m working on it, plugged to electricity, and unplug it to emulate an outage, I can keep working perfectly fine, running my notebook on batteries [this dismisses the potential issue of having damaged batteries]. However, when it’s turned off, and I try to boot it up, running on batteries [unplugged from the electricity] it won’t respond. It doesn’t even start. By this, I mean that even the usual light in the power button doesn't even start, screen stays black, there are no lights and no fans. This never happened before when I had Ubuntu 20.04 on this notebook. It started after the installation of Ubuntu 22.04, sadly.
I’ve tried already these solutions [here], but none worked. [I tried the suggestion for Dell computers even when my notebooks is not of that brand]. I also awaited several updates in hopes that it would be fixed with some update in case the problem was a bug in the new system. But so far, I found no solution to this problem.
The info of my notebook is the following:
The brand is a national one: Kanji Tamura, intel dual core 847.
$ lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation NM70 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus Controller (rev 04)
01:00.0 Network controller: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe
01:00.1 Bluetooth: Ralink corp. RT3290 Bluetooth
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
Keep in mind I’m not an expert in computers or Ubuntu. [I also apologise for any weird expression I may use in the explanation, I'm not a native English speaker]
Thank you very much in advance for any suggestion.
Edit: Following Esther's answer, I'll assume it must be a hardware problem, even though it starts perfectly fine when it's plugged, or when once it's turned on, I unplug it and keeps working without problems.