Checkbox

Testing PAE kernel is being used

Bug #530721 reported by Marc Tardif
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Checkbox
Fix Released
Low
Unassigned
Checkbox 0.13 "first_p_release"

Bug Description

In order to test that the PAE kernel is being used when more than 3.2G of memory is physically available, it should be possible to compare the output of dmidecode to the content of /proc/meminfo. If they are different, then perhaps the wrong kernel was loaded.

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David Murphy (schwuk) wrote :

http://linuxator.wordpress.com/2008/10/28/using-dmidecode-to-find-out-what-memory-chips-you-have/

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Ronald McCollam (fader) wrote :
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Ronald McCollam (fader) wrote :
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Ameet Paranjape (ameetp) wrote :

output of 'cat /proc/meminfo'

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Ameet Paranjape (ameetp) wrote :

output of 'sudo dmidecode -t 2,16,17'

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C de-Avillez (hggdh2) wrote :
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Ara Pulido (ara) wrote :
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C de-Avillez (hggdh2) wrote :
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Ara Pulido (ara) wrote :
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Marjo F. Mercado (marjo-mercado) wrote :
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Marjo F. Mercado (marjo-mercado) wrote :
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Jeff Lane  (bladernr) wrote :

contents of /proc/meminfo

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Jeff Lane  (bladernr) wrote :

output of dmidecode

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Brian Murray (brian-murray) wrote :

You might find bug 413135 has some useful information for this issue in particular the patch in comment #39 and looking at /usr/lib/base-installer/dmi-available-memory.

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Steve Beattie (sbeattie) wrote :

Lenovo T61 dmidecode (onboard graphics)

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Steve Beattie (sbeattie) wrote :

Lenovo T61 /proc/meminfo (onboard graphics)

Marc Tardif (cr3)
Changed in checkbox:
importance: Undecided → Wishlist
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Brendan Donegan (brendan-donegan) wrote :

Set to confirmed, as we're agreed that we need a test for this.

Changed in checkbox:
status: New → Confirmed
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Jeff Lane  (bladernr) wrote :

Targeting this to 0.13. Seems like a good idea for an additional test and should be low hanging fruit...

Changed in checkbox:
milestone: none → 0.13
importance: Wishlist → Low
Revision history for this message
Daniel Manrique (roadmr) wrote :

The memory/info test now uses memory_compare script to validate the amount of RAM the kernel is using against the total reported by DMI.

The intent was not to detect use of a PAE kernel, but to automate memory testing (which was rather meaningless to most users). I'll mark this Fix Released as the described functionality is now available in Checkbox, and testing for PAE kernels can be done in other ways if desired.

Changed in checkbox:
status: Confirmed → Fix Released
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