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I have a weird issue that I'm not sure how to troubleshoot.

I have a Razer Blade laptop that seems to work just fine when plugged into AC power. But when I unplug and go on battery power, the keyboard becomes intermittently unresponsive.

It's as if they're going to sleep randomly. It happens pretty often, even if I'm in the middle of typing something. It can take a few seconds for them to become responsive again.

My touchpad behaves similarly, but don't seem to be misbehaving as badly as the keyboard does.

I'm not really sure how to troubleshoot the issue. It seems to happen less if I boot up on AC power and then go to battery power, but if I boot up on battery power, it becomes almost unusable.

Can someone point me in the right direction?

Output of dmesg -t --level=alert,crit,err,warn

x86/cpu: SGX disabled by BIOS ENERGY_PERF_BIAS: Set to 'normal', was 'performance' ACPI Error: No handler for Region [VRTC] (0000000038115a5d) [SystemCMOS] (20210105/evregion-130) ACPI Error: Region SystemCMOS (ID=5) has no handler (20210105/exfldio-261) ACPI Error: Aborting method \_SB.PCI0.LPCB.EC0.RTEC due to previous error (AE_NOT_EXIST) (20210105/psparse-529) ACPI Error: Aborting method \_SB.PCI0.LPCB.EC0._REG due to previous error (AE_NOT_EXIST) (20210105/psparse-529) efifb: Ignoring BGRT: unexpected or invalid BMP data nvme nvme1: missing or invalid SUBNQN field. CRAT table not found v4l2loopback: loading out-of-tree module taints kernel. acpi PNP0C14:02: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00) acpi PNP0C14:03: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00) acpi PNP0C14:04: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00) platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 iwlwifi 0000:03:00.0: api flags index 2 larger than supported by driver thermal thermal_zone7: failed to read out thermal zone (-61) dell_smbios: Unable to run on non-Dell system nvidia: module license 'NVIDIA' taints kernel. Disabling lock debugging due to kernel taint NVRM: loading NVIDIA UNIX x86_64 Kernel Module 465.31 Thu May 13 22:24:36 UTC 2021 ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20210105/nsarguments-61) nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DP-4 nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DP-4 kauditd_printk_skb: 254 callbacks suppressed kauditd_printk_skb: 11 callbacks suppressed kauditd_printk_skb: 15 callbacks suppressed
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  • Please try this unix.stackexchange.com/questions/91027/… Commented Jul 14, 2021 at 2:49
  • Thanks Artem. Before I saw this, I ended up solving it with something similar. Rather than disabling USB autosuspend completely, I set up a udev rule on my keyboard/touchpad device to disable autosuspend just for those devices. I basically followed this wiki.archlinux.org/title/Power_management#USB_autosuspend and replaced the vendor and device ids with what I found using lsusb. Commented Jul 14, 2021 at 3:27
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    You can answer your own question then :-) Get some points for that :-) Commented Jul 14, 2021 at 5:14
  • Actually, that was a false positive. I seem to have the problem again. I also tried disabling autosuspend per the comment you left @ArtemS.Tashkinov, but that did not work either :( I'm still tinkering with it thought... Commented Jul 15, 2021 at 21:44
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    No, it works fine in Windows. I think I got to the root of it now. I had laptop-mode-tools installed. I had disabled it but I just realized it was turning itself on automatically when I was on battery power. I just removed it completely and now my keyboard seems to be behaving properly. After a little more searching on laptop-mode-tools and mouse/keyboard problems, I found this askubuntu.com/questions/760887/… It looks like it was controlling USB autosuspend even though I disabled it. Commented Jul 19, 2021 at 1:45

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