Is it possible to upgrade the linux kernel?


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Aug 15, 2011
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I'd like to run the 3.12 rc4 kernel on my OP.

I've upgraded the kernel on my laptop before quite easily.

Was wondering how difficult it is to do it on the OP?
 
Sure I know for stability it's sometimes good to stay on an old kerenel but I'd like to upgrade it anyway (just for kicks I guess)

Is is just a case of downloading the linux kernel headers?

In Debian I'd just do a

apt-get install linux-image-x.x.x-xx

but OP doesn't have apt-get right?
 
The problem is that there is still a few patches requiered for OP that are not in the mainline kernel. So these patches have to be ported to the new kernel. That's a not so simple task (Notaz usually does that for us). Beside the configuration requiered for OP isnt simple too. You need modules for unionfs and many others "details" that have to be respected for the system to work as a whole.

I bet that if there is no good reason to switch to a newer kernel, nobody will do all that daunting tasks.
 
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Why you care about boot time? Just leave your Pandora in low power mode when you close it.

And caching has probably nothing with boot time at all.
I would like boot time to be quicker, though I wouldn't say it bothers me too much.
My Pandora often gets powered off. Times I've left it in low power mode and not gone back to it results in the battery emptying that you can't start recharging from USB, which is really frustrating when you're not actually at home with the proper charger. Low power mode only really suits people who are constantly using a device and constantly charging it.
 
Surely that would benefit? :P
I don't know what you expect really. If you think the boot is going to be twice faster, you're in for a big surprise. You will struggle to get more than 10-20% faster boot even if heavily optimized. There's tons of articles on the subject, so let's spend time on something that really brings more than 10s difference to the users.
 
I'm just waiting a newer kernel to check if ISO OPTICAL DRIVE could be finally used to boot a PC...
 
Why you care about boot time? Just leave your Pandora in low power mode when you close it.

And caching has probably nothing with boot time at all.
I would like boot time to be quicker, though I wouldn't say it bothers me too much.
My Pandora often gets powered off. Times I've left it in low power mode and not gone back to it results in the battery emptying that you can't start recharging from USB, which is really frustrating when you're not actually at home with the proper charger. Low power mode only really suits people who are constantly using a device and constantly charging it.
Why would being at home help? Unless something has changed, the device won't power up from mains if there's a dead battery installed at the time.
Surely that would benefit? :P
I don't know what you expect really. If you think the boot is going to be twice faster, you're in for a big surprise. You will struggle to get more than 10-20% faster boot even if heavily optimized. There's tons of articles on the subject, so let's spend time on something that really brings more than 10s difference to the users.
Normally, recompiling the kernel and removing things that don't apply makes a huge difference. However, in this case, I doubt it would make a meaningful difference. Presumably Notaz or whoever it is that does the compiling is already leaving out the options that aren't applicable for the OP and using a decent set of compiler options. So, I'd be surprised if one saw measurable improvement.
 
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Why would being at home help? Unless something has changed, the device won't power up from mains if there's a dead battery installed at the time
Home is where I keep my mains power cable.Of course it powers up when you plug a mains charger in. Otherwise the instant you let the battery go flat, you would have to buy a new battery, or find an external charger; both of which are obviously ludicrous.

You can *always* charge from the mains, but only charge from USB if it has enough juice to boot up first.

If your device can't charge a flat battery, even connected through the mains charger, then I'd be tempted to ask E.D. about your unit, as it would seem faulty to me
 
Surely that would benefit? :P
F2FS was designed for block based devices, i.e. flash-based devices with FTLs. The NAND inside the Pandora has no FTL, it is directly accessed and therefore does not support file systems for block based devices. You might read somewhere that F2FS has an own FTL, but it's meant as an addition to the hardware-side FTL and does not cover e.g. wear levelling. It is only useful for SD cards etc.
 
Why would being at home help? Unless something has changed, the device won't power up from mains if there's a dead battery installed at the time
Home is where I keep my mains power cable.
Of course it powers up when you plug a mains charger in. Otherwise the instant you let the battery go flat, you would have to buy a new battery, or find an external charger; both of which are obviously ludicrous.


You can *always* charge from the mains, but only charge from USB if it has enough juice to boot up first.


If your device can't charge a flat battery, even connected through the mains charger, then I'd be tempted to ask E.D. about your unit, as it would seem faulty to me
That's definitely not what I've observed. That's the way that it should be, but, if you've got your device unplugged for a week or so and try to charge it won't turn on, and because it won't turn on, it won't charge. I've taken to leaving my unit plugged in most of the time when it isn't in use, because of that.

I probably should ask ED because it should charge when plugged into mains, but figuring out how to get it to power on so that it will charge is problematic. 
 
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