Samsung SSD 850 EVO 250GB about hddtemp HOT 6 OPEN

And the same here with 870 EVO 50GB @ Debian testing:

WARNING: Drive /dev/sda doesn't seem to have a temperature sensor.
WARNING: This doesn't mean it hasn't got one.
WARNING: If you are sure it has one, please contact me ([email protected]).
WARNING: See --help, --debug and --drivebase options.
/dev/sda: Samsung SSD 870 EVO 500G B              �@:  no sensor

After addig it to /etc/hddtemp.db like this

"Samsung SSD 870 EVO 500G"    190   C "Samsung SSD 870 EVO 500GB"

the result is

/dev/sda: Samsung SSD 870 EVO 500G B              �@: 35°C

S.M.A.R.T. info:

Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  9 Power_On_Hours          0x0032   099   099   000    Old_age   Always       -       128
 12 Power_Cycle_Count       0x0032   099   099   000    Old_age   Always       -       29
177 Wear_Leveling_Count     0x0013   099   099   000    Pre-fail  Always       -       1
179 Used_Rsvd_Blk_Cnt_Tot   0x0013   100   100   010    Pre-fail  Always       -       0
181 Program_Fail_Cnt_Total  0x0032   100   100   010    Old_age   Always       -       0
182 Erase_Fail_Count_Total  0x0032   100   100   010    Old_age   Always       -       0
183 Runtime_Bad_Block       0x0013   100   100   010    Pre-fail  Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0032   065   051   000    Old_age   Always       -       35
195 Hardware_ECC_Recovered  0x001a   200   200   000    Old_age   Always       -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       0
235 Unknown_Attribute       0x0012   099   099   000    Old_age   Always       -       3
241 Total_LBAs_Written      0x0032   099   099   000    Old_age   Always       -       1366353481

Package(s):

ii  hddtemp        0.3-beta15-54 amd64        hard drive temperature monitoring utility

from hddtemp.

same issue here with the 500GB

WARNING: Drive /dev/sda doesn't seem to have a temperature sensor.
WARNING: This doesn't mean it hasn't got one.
WARNING: If you are sure it has one, please contact me ([email protected]).
WARNING: See --help, --debug and --drivebase options.
/dev/sda: Samsung SSD 860 EVO 500G B ���@: no sensor

smartctl output (abr.)

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
5 Reallocated_Sector_Ct PO--CK 100 100 010 - 0
9 Power_On_Hours -O--CK 099 099 000 - 1652
12 Power_Cycle_Count -O--CK 099 099 000 - 10
177 Wear_Leveling_Count PO--C- 099 099 000 - 4
179 Used_Rsvd_Blk_Cnt_Tot PO--C- 100 100 010 - 0
181 Program_Fail_Cnt_Total -O--CK 100 100 010 - 0
182 Erase_Fail_Count_Total -O--CK 100 100 010 - 0
183 Runtime_Bad_Block PO--C- 100 100 010 - 0
187 Reported_Uncorrect -O--CK 100 100 000 - 0
190 Airflow_Temperature_Cel -O--CK 069 050 000 - 31
195 Hardware_ECC_Recovered -O-RC- 200 200 000 - 0
199 UDMA_CRC_Error_Count -OSRCK 100 100 000 - 0
235 Unknown_Attribute -O--C- 099 099 000 - 4
241 Total_LBAs_Written -O--CK 099 099 000 - 3665803311
||||||_ K auto-keep
|||||__ C event count
||||___ R error rate
|||____ S speed/performance
||_____ O updated online
|______ P prefailure warning

OS: Debian 10 updated to current packages

from hddtemp.

I have Samsung SSD 860 EVO 1TB and the temperature is also in field 190

from hddtemp.

same with the 860, it is recognised if I include the following to the db (note that the "B" in GB needs to be omitted):
"Samsung SSD 860 EVO 500G" 190 C "Samsung SSD 860 EVO 500GB"

from hddtemp.

Which of the fields are actually showing the right temp?

ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
190 Airflow_Temperature_Cel -O--CK 066 053 000 - 34

In my syslog it says

Device: /dev/sda [SAT], SMART Usage Attribute: 190 Airflow_Temperature_Cel changed from 66 to 65

which would then be the VALUE field that is a real temp and not RAW_VALUE

???

from hddtemp.

The Value field agrees with separately obtained data from smartmontools on my Samsung SSD's

However, on a my Crucial ssd its field RAW_VALUE from smartctl that matched the value from hddtemp of 40C, which given the overall temp readings of cpu, gpu, and an nvme pcie are around 60C , is the incorrect field for this disk.

ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
194 Temperature_Celsius -O---K 060 043 000 - 40 (Min/Max 25/57)

Regards,Tom.

from hddtemp.