Posted: Sat Nov 30, 2024 17:36 Post subject: For DD-WRT firmware, which version of Linux Kernel?
For a particular firmware version, how do I determine which version of the Linux Kernel the firmware is based on? (I want to be able to do this before upgrading my firmware from one version of DD-WRT to a newer version of DD-WRT.)
Here is the version of the firmware for which I am seeking an answer. (This is the version that I am considering upgrading to.)
TP-Link Archer C7 v5
09/13/2024 - r58381
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=337336
The way that I interpret that post is
There is no easy way to determine the firmware version but you can make an educated "guess."
However, I might be drawing the wrong conclusion there.
From having installed a January 2024 version of the firmware for the TP-Link Archer C7 v5, I see that the Kernel is 3.18.xx. So, I predict that 09/13/2024 - r58381 is also 3.18.xx.
Joined: 08 May 2018 Posts: 16695 Location: Texas, USA
Posted: Sat Nov 30, 2024 18:06 Post subject:
Depends on the device. Some antique devices are still using Linux 2.4.x, others 2.6.x - some having a choice of Linux 4.4.x (used to be 3.10.x for Broadcom MIPS), still others Linux 3.2.x, Linux 3.5.x, Linux 3.10.x, Linux 3.18.x, Linux 4.4.x, Linux 4.9.x, Linux 4.14.x, Linux 6.1.x, and Linux 6.6.x. Easiest way to tell is either via webUI or via telnet/ssh via issuing a uname -a. Most all devices running older kernels will likely never see a kernel version update. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Joined: 16 Nov 2015 Posts: 7063 Location: UK, London, just across the river..
Posted: Sat Nov 30, 2024 19:24 Post subject:
Nuor wrote:
kernel-panic69 wrote:
Most all devices running older kernels will likely never see a kernel version update.
Are you able to be specific about "older". Might 4.9 be upgraded to 6.+ on R9000?
4.4.x & 4.9.x are still supported & backported ....kind of...
why do you need .... those ...
if you insist someone to update kernels just because yr blue eyes....it not an easy job and it wont happen...your best move is to get a device that is using 6.1 or 6.6 and this is not a grant for success...or better use/stability and ect...
R9000 on 4.9 is rock solid and fine... _________________ Atheros
TP-Link WR1043NDv2 -DD-WRT 62606 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 -DD-WRT 63257 GTW/SmDNS/DoT,AD-Blk,Forced DNS,AP&Net Isolation,x2VLAN,Vanilla
Netgear R7800 --DD-WRT 62606 Gateway/DNSCryptv2,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla,VPN cli
Netgear R9000 --DD-WRT 62606 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Dynalink DL-WRX36-DDWRT 62606
Broadcom
Netgear R7000 --DD-WRT 63257 GTW/DNScrypt-proxy2/AD-Block,IPset Firewall,Forced DNS,x4VLAN,VPN cli
NOT USING 5Ghz ANYWHERE
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Stubby DNS over TLS I DNSCrypt v2 by mac913
Joined: 08 May 2018 Posts: 16695 Location: Texas, USA
Posted: Sat Nov 30, 2024 21:35 Post subject:
Nuor wrote:
kernel-panic69 wrote:
Most all devices running older kernels will likely never see a kernel version update.
Are you able to be specific about "older". Might 4.9 be upgraded to 6.+ on R9000?
I don't think there are plans to migrate the R9000 to Linux 6.x.x, but I am not going to ask the headmaster about it. If it concerns you that much, feel free to migrate to unofficial OpenWRT firmware... just don't expect opkg to work.
K4.9 is EOL since about two years ago (https://endoflife.date/linux) it is possible that someone will back port patches in case of severe security problems
Easiest way to tell is either via webUI or via telnet/ssh via issuing a uname -a.
If the user does not have the firmware in question installed on a device, your method is not so easy. Is there another method? the user would have to look at the source code?
I'd post my notes, but that would be spoon-feeding. The Wiki is limited in being able to have the information in the supported devices table or on each supported device's individual wiki page (many do not have one). Seems like scratching an itch is what you're doing. Download all the files and forensically examine them if you are actually that interested.
I guess it's not that important to me anymore.
As you probably know, the reason for my original question (the original post in this threade) was because here
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=337759&highlight=
someone said that a change in Kernel version would mean that you can't rely much on your settings carrying over from one firmware version to another firmware version.
