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Old 06-06-2016, 04:16 PM   #1
zpimp
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i3 broadwell ram problem


lenovo b50-80 laptop i3-5010u/broadwell(hd5500)/4gb ram
on various x86 distros i have ~2.4gb ram usable (antix,slitaz)
on x86_64 distros i have ~3.8gb ram usable (antix,manjaro)
this happens on live boot as well as on installed distro
i suspect it must be somewhow related to the integrated gpu hd5500 but cant figure it out

never encountered this before, i have no idea where to start
ive been wondering for almost 24 hours, please help
 
Old 06-06-2016, 09:29 PM   #2
frankbell
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A web search tells me that this is a 64-bit machine. If you are using 32-bit distros on it, they need PAE kernels to address all the RAM.

http://askubuntu.com/questions/19389...kernel-version

If this doesn't help, please provide the output of

Code:
lscpu
being sure to surround it with "Code" tags which become available when you click the "Go Advanced" button at the bottom of the "compose post" window.
 
1 members found this post helpful.
Old 06-06-2016, 09:42 PM   #3
jefro
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Pretty sure frankbell has it.
 
Old 06-06-2016, 10:41 PM   #4
zpimp
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no offense, but i dont think thats the problem
on other machines, same distro i see over 3.5gb ram without pae
even on windows xp i saw 3.2-3.8 from 4gb depending on machine
but not 2.4gb, i cant believe this

Code:
dmesg | grep Memory
[    0.000000] Memory: 2505528K/2554820K available (5807K kernel code, 399K rwdata, 1744K rodata, 504K init, 440K bss, 49292K reserved, 0K cma-reserved, 1645912K highmem)
[    2.247159] [drm] Memory usable by graphics device = 2048M

sudo dmidecode --type 17

# dmidecode 2.12
SMBIOS 2.7 present.

Handle 0x000D, DMI type 17, 34 bytes
Memory Device
	Array Handle: 0x000C
	Error Information Handle: No Error
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 4096 MB
	Form Factor: SODIMM
	Set: None
	Locator: ChannelA-DIMM0
	Bank Locator: BANK 0
	Type: DDR3
	Type Detail: Synchronous
	Speed: 1600 MHz
	Manufacturer: 0467
	Serial Number: 67161430
	Asset Tag: 9876543210
	Part Number: RMT3170MN68F9F1600
	Rank: 1
	Configured Clock Speed: 1600 MHz
why

Last edited by zpimp; 06-06-2016 at 10:50 PM.
 
Old 06-06-2016, 10:43 PM   #5
frankbell
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What is the output of lscpu on this machine and on the other machines to which you refer? What are the makes/models of the other machines in question?

The more information you provide, the easier it is for others to help you.

Last edited by frankbell; 06-06-2016 at 10:46 PM.
 
Old 06-06-2016, 10:51 PM   #6
zpimp
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lenovo i3 2.41gb ram
Code:
lscpu
Architecture:          i686
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    2
Core(s) per socket:    2
Socket(s):             1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 61
Model name:            Intel(R) Core(TM) i3-5010U CPU @ 2.10GHz
Stepping:              4
CPU MHz:               1801.488
CPU max MHz:           2100.0000
CPU min MHz:           500.0000
BogoMIPS:              4190.23
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              3072K
fujitsu core2duo 2.92gb ram
Code:
Architecture:          i686
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    2
Socket(s):             1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 15
Model name:            Intel(R) Core(TM)2 Duo CPU     E6850  @ 3.00GHz
Stepping:              11
CPU MHz:               1999.000
CPU max MHz:           2999.0000
CPU min MHz:           1999.0000
BogoMIPS:              5985.14
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              4096K


dmesg | grep Memory
[    0.000000] Memory: 3061712K/3102116K available (5807K kernel code, 399K rwdata, 1744K rodata, 504K init, 440K bss, 40404K reserved, 0K cma-reserved, 2193224K highmem)



# dmidecode 2.12
SMBIOS 2.5 present.

Handle 0x0029, DMI type 17, 27 bytes
Memory Device
	Array Handle: 0x0028
	Error Information Handle: No Error
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 1024 MB
	Form Factor: DIMM
	Set: None
	Locator: Slot-1
	Bank Locator: Channel A
	Type: DDR2
	Type Detail: Synchronous
	Speed: 800 MHz
	Manufacturer: 48spaces                                        
	Serial Number: 01234567
	Asset Tag: 01234567
	Part Number: 012345678901234567890123456789012345

Handle 0x002A, DMI type 17, 27 bytes
Memory Device
	Array Handle: 0x0028
	Error Information Handle: No Error
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 512 MB
	Form Factor: DIMM
	Set: None
	Locator: Slot-3
	Bank Locator: Channel A
	Type: DDR2
	Type Detail: Synchronous
	Speed: 800 MHz
	Manufacturer: 48spaces                                        
	Serial Number: 11234567
	Asset Tag: 11234567
	Part Number: 112345678901234567890123456789012345

Handle 0x002B, DMI type 17, 27 bytes
Memory Device
	Array Handle: 0x0028
	Error Information Handle: No Error
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 1024 MB
	Form Factor: DIMM
	Set: None
	Locator: Slot-2
	Bank Locator: Channel B
	Type: DDR2
	Type Detail: Synchronous
	Speed: 800 MHz
	Manufacturer: 48spaces                                        
	Serial Number: 21234567
	Asset Tag: 21234567
	Part Number: 212345678901234567890123456789012345

Handle 0x002C, DMI type 17, 27 bytes
Memory Device
	Array Handle: 0x0028
	Error Information Handle: No Error
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 512 MB
	Form Factor: DIMM
	Set: None
	Locator: Slot-4
	Bank Locator: Channel B
	Type: DDR2
	Type Detail: Synchronous
	Speed: 800 MHz
	Manufacturer: 48spaces                                        
	Serial Number: 31234567
	Asset Tag: 31234567
	Part Number: 312345678901234567890123456789012345
on this second machine
dmi decode says i have 512+1024+512+1024 - 3gb and dmesg also shows 3gb
conky shows 2.92 from 3gb is fine
but 2.41 from 4gb seem strange

Last edited by zpimp; 06-06-2016 at 11:01 PM.
 
Old 06-06-2016, 10:57 PM   #7
Timothy Miller
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Well, the 64-bit machine definitely shows 3.8 because of the integrated graphics. Absolutely no clue why it shows only 2.4 GB on 32-bit.
 
Old 06-06-2016, 11:26 PM   #8
zpimp
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problem solved, as frankbell said, needed pae kernel
installed 4.2.1-pae
and now its fine
Code:
$ dmesg | grep Memory
[    0.000000] Memory: 4042356K/4111300K available (6411K kernel code, 463K rwdata, 1808K rodata, 592K init, 660K bss, 68944K reserved, 0K cma-reserved, 3198296K highmem)
[    5.527450] [drm] Memory usable by graphics device = 2048M
 
Old 06-07-2016, 09:28 AM   #9
beachboy2
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zpimp,

Glad you managed to solve your problem.

Please go to your original post and click on the Thread Tools tab above the text box and then click on Mark this thread as Solved.
 
  


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