I am going to try this but it will take some time. I will let you know if I encounter any issues.
Lubos On Sunday, January 4th, 2026 at 06:35, Salvatore Bonaccorso <[email protected]> wrote: > > > Control: tags -1 + moreinfo > > Hi > > On Sun, Jan 04, 2026 at 12:49:13AM +0000, Luboš Bouček wrote: > > > With this kernel: > > > > $ uname -r > > 6.17.13+deb13-amd64 > > > > The laptop seems to suspend correctly, thanks! > > > Ok that are great news. > > Can you do further debugging on this issue? I see three major steps, > each in case of debugging "success". > > - narrow down more the affected range of Debian versions where the > issue got fixed. > - Bisect the upstream changes to identify a fixing commit > - Check if the commit can be backported to 6.12.y and resolving the > issue. > > I will outline only the first two first. So between 6.12.57-1 and > 6.17.13-1 there are a couple of linux uploads happened: > > 6.17.13-1 > 6.17.13-1~bpo13+1 > 6.17.12-1 > 6.17.11-1 > 6.17.10-1 > 6.17.9-1 > 6.17.8-1 > 6.17.8-1~bpo13+1 > 6.17.7-2 > 6.17.7-1 > 6.17.6-1 > 6.17.5-1~exp1 > 6.17.2-1~exp1 > 6.16.12-2 > 6.16.12-1 > 6.16.12-1~bpo13+1 > 6.16.11-1 > 6.16.10-1 > 6.16.9-1 > 6.16.8-1 > 6.16.7-1 > 6.16.6-1 > 6.16.5-1 > 6.16.3-1 > 6.16.3-1~bpo13+1 > 6.16.1-1~exp1 > 6.16-1~exp1 > 6.16~rc7-1~exp1 > 6.15.6-1~exp1 > 6.15.5-1~exp1 > 6.15.4-1~exp1 > 6.15.3-1~exp1 > 6.15.2-1~exp1 > 6.15.1-1~exp1 > 6.15-1~exp1 > 6.15~rc7-1~exp1 > 6.14.6-1~exp1 > 6.14.5-1~exp1 > 6.14.3-1~exp1 > 6.13.11-1~exp1 > 6.13.10-1~exp1 > 6.13.9-1~exp1 > 6.13.8-1~exp1 > 6.13.7-1~exp1 > 6.13.6-1~exp1 > 6.13.5-1~exp1 > 6.13.4-1~exp1 > 6.13.3-1~exp1 > 6.13.2-1~exp1 > 6.13~rc7-1~exp1 > 6.13~rc6-1~exp1 > 6.12.63-1 > 6.12.57-1 > > From https://snapshot.debian.org/ you can fetch earlier and seen > uploads.so by querying > https://snapshot.debian.org/package/linux-signed-amd64/ you can get > earlier linux-image packages. > > The idea would be to now do a "manual" bisect of those changes > identifying at least a major version range where things changes. > > Assume you found that, by first searching and testing the major > version bumps that 6.13~rc7-1~exp1 exposes the problem but > 6.14.3-1~exp1 will not anymore. > > The next step would be to test the equivalent upstream versions and > check that this still holds true and then start the bisection. This > can be done as follows, again remember with the hypotetical above > versions (adapt as needed), and it would involve compiling and testing > a few kernels: > > git clone > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git > cd linux-stable > git checkout v6.14.3 > cp /boot/config-$(uname -r) .config > yes '' | make localmodconfig > make savedefconfig > mv defconfig arch/x86/configs/my_defconfig > > # test 6.14.3 to ensure this is "good" > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install the resulting .deb package and confirm problem does not exist > > # test 6.13~rc7 to ensure this is "bad" > git checkout v6.13-rc7 > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install the resulting .deb package and confirm problem exists > > With that confirmed, the bisection can start: > > git bisect start --term-new=fixed --term-old=broken > git bisect fixed v6.14.3 > git bisect broken v6.13-rc7 > > In each bisection step git checks out a state between the oldest > known-bad and the newest known-good commit. In each step test using: > > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install, try to boot / verify if problem exists > > and if the problem is hit run: > > git bisect broken > > and if the problem doesn't trigger run: > > git bisect fixed > > . Please pay attention to always select the just built kernel for > booting, it won't always be the default kernel picked up by grub. > > Iterate until git announces to have identified the first 'fixed' > commit. > > Then provide the output of > > git bisect log > > In the course of the bisection you might have to uninstall previous > kernels again to not exhaust the disk space in /boot. Also in the end > uninstall all self-built kernels again. > > Can you please do this bisect? > > Regards, > Salvatore
