I am having weird issue with suspend not working on HP ProBook 6560b laptop. Why this is weird is because the suspend used to work on my laptop before. I recently bought a new second hand laptop which is the exact same model and transferred HDD and RAM to it. Everything else seems to be working perfectly apart from the suspend recovery.
What happens
When I suspend the OS from the Mint menu or by pressing the power button and choosing 'suspend', the suspend seems to work well. I see no errors in /var/log/pm-suspend.log
It is impossible to resume from the suspend though, even though the computer seems to power back up, the screen stays black and the only way to get things going again is to do a hard reset by downpressing the power button.
I have tried to disable swap by doing
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swapoff /swapfile
I have looked for a BIOS update for this laptop but one doesn't seem to exist, at least from the official HP source.
I tried to look for any Suspend settings in BIOS but they seem to be non-existent.
I tried to remove one of the two 4GB RAM modules and then suspend/resume but it did not fix it.
I tried to boot into a live USB of LM 20.1 and then suspend/resume, but I encountered the same problem with the live USB.
I tried with an earlier kernel version (5.4.0-58), but it did not help.
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inxi -Fxzd
System:
Kernel: 5.4.0-89-generic x86_64 bits: 64 compiler: gcc v: 9.3.0
Desktop: Cinnamon 4.8.6 Distro: Linux Mint 20.1 Ulyssa
base: Ubuntu 20.04 focal
Machine:
Type: Laptop System: Hewlett-Packard product: HP ProBook 6560b v: A0001D02
serial: <filter>
Mobo: Hewlett-Packard model: 1619 v: KBC Version 97.40 serial: <filter>
BIOS: Hewlett-Packard v: 68SCE Ver. F.03 date: 04/27/2011
Battery:
ID-1: BAT0 charge: 39.6 Wh condition: 39.6/39.6 Wh (100%)
model: Hewlett-Packard Primary status: Full
CPU:
Topology: Dual Core model: Intel Core i5-2520M bits: 64 type: MT MCP
arch: Sandy Bridge rev: 7 L2 cache: 3072 KiB
flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19953
Speed: 798 MHz min/max: 800/3200 MHz Core speeds (MHz): 1: 798 2: 798
3: 798 4: 798
Graphics:
Device-1: Intel 2nd Generation Core Processor Family Integrated Graphics
vendor: Hewlett-Packard driver: i915 v: kernel bus ID: 00:02.0
Display: x11 server: X.Org 1.20.11 driver: modesetting
unloaded: fbdev,vesa resolution: 1366x768~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics 3000 (SNB GT2)
v: 3.3 Mesa 21.0.3 direct render: Yes
Audio:
Device-1: Intel 6 Series/C200 Series Family High Definition Audio
vendor: Hewlett-Packard driver: snd_hda_intel v: kernel bus ID: 00:1b.0
Sound Server: ALSA v: k5.4.0-89-generic
Network:
Device-1: Intel 82579V Gigabit Network vendor: Hewlett-Packard
driver: e1000e v: 3.2.6-k port: 4060 bus ID: 00:19.0
IF: enp0s25 state: down mac: <filter>
Device-2: Intel Centrino Advanced-N 6205 [Taylor Peak] driver: iwlwifi
v: kernel port: 4040 bus ID: 24:00.0
IF: wlo1 state: up mac: <filter>
Drives:
Local Storage: total: 698.64 GiB used: 616.30 GiB (88.2%)
ID-1: /dev/sda vendor: Toshiba model: MQ01ABD075 size: 698.64 GiB
Optical-1: /dev/sr0 vendor: hp model: CDDVDW TS-L633R rev: 0300
dev-links: cdrom,cdrw,dvd,dvdrw
Features: speed: 24 multisession: yes audio: yes dvd: yes
rw: cd-r,cd-rw,dvd-r,dvd-ram state: running
Partition:
ID-1: / size: 684.49 GiB used: 616.00 GiB (90.0%) fs: ext4 dev: /dev/dm-1
ID-2: /boot size: 703.5 MiB used: 307.3 MiB (43.7%) fs: ext4
dev: /dev/sda5
Sensors:
System Temperatures: cpu: 46.0 C mobo: 0.0 C
Fan Speeds (RPM): N/A
Info:
Processes: 225 Uptime: 50m Memory: 7.71 GiB used: 1.78 GiB (23.0%)
Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17
inxi: 3.0.38
I don't the reinstalling LM 20.1 would resolve the issue as the live USB did not work either, so it must be a hardware problem?
Any ideas?
Thanks.