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Old 12-29-2017, 07:48 AM   #1
knappster
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Registered: Mar 2004
Posts: 175

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RTC wakeup no longer working Kernel 4.9.61-1


I am using Arch Linux kernel 4.9.61-1 (what I'll call new) on a mythtv distro called LinHES. I recently upgraded from kernel 3.6.7-1 (what I'll call old).

Since upgrading to the new version, I have been unable to get acpi/rtc wakeup to work, despite having the exact same bios settings and hardware (apart from HDD) as the old version. I have since tried upgrading the bios firmware and tweaking settings to no avail. The motherboard I am using is:
ASUS M5A78L-M LX3

The only other compatibility issue I have found is that with the Artheros 8161 Ethernet module alx driver no longer supports WoL with the new kernel. I wouldn't expect it to be related, but they are both wake events which are not working.

edit: I was able to get wol functioning with a dkms driver patch, but still no rtc wakeup.

A couple days ago I went so far as to boot the system from the old version and test it again and it worked. The /proc/driver/rtc date was as follows:
Code:
rtc_time        : 13:47:19
rtc_date        : 2017-12-27
alrm_time       : 13:51:19
alrm_date       : 2017-12-27
alarm_IRQ       : yes
alrm_pending    : no
update IRQ enabled      : no
periodic IRQ enabled    : no
periodic IRQ frequency  : 1024
max user IRQ frequency  : 64
24hr            : yes
periodic_IRQ    : no
update_IRQ      : no
HPET_emulated   : yes
BCD             : yes
DST_enable      : no
periodic_freq   : 1024
batt_status     : dead
The output from an attempt from the new version earlier this morning which did not wake up is as follows
Code:
rtc_time        : 13:18:51
rtc_date        : 2017-12-29
alrm_time       : 13:22:52
alrm_date       : 2017-12-29
alarm_IRQ       : yes
alrm_pending    : no
update IRQ enabled      : no
periodic IRQ enabled    : no
periodic IRQ frequency  : 1024
max user IRQ frequency  : 64
24hr            : yes
periodic_IRQ    : no
update_IRQ      : no
HPET_emulated   : yes
BCD             : yes
DST_enable      : no
periodic_freq   : 1024
batt_status     : dead
Has anybody had similar issues or can anyone provide some troubleshooting techniques to figure out why it wakes up using the old kernel but not the new? Thanks.

Last edited by knappster; 12-30-2017 at 08:13 AM. Reason: additional info on Wake on Lan
 
  


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