Hi Luke, Luke <firstname.lastname@example.org> (2016-07-01): > Unless I add "nomodeset" to the grub (specifically: > GRUB_CMDLINE_LINUX_DEFAULT="quiet nomodeset") my pc does not boot (black > screen). > As a consequence, it is not possible to change screen resolution, to use > an external monitor, or to change the brightness. > > I checked however that everything works fine with Fedora 24: I guess > therefore that the solution must be in the open domain by now. Just, I > can't find it. > > I am running Jessie 8.5 (with kernel 4.6.0-0.bpo.1-amd64) > on a Thinkpad X1 4th generation. More details can be found here: > https://wiki.debian.org/InstallingDebianOn/Thinkpad/X1%20Carbon%204thGen > %20PCIe_SSD/jessie (I wrote that page). > > Any suggestions? > Many thanks in advance, Luke The debian-boot@ list deals with the Debian Installer. Your problem is likely located somewhere between the linux kernel and the X world. I would advise filing a bug report against the linux kernel package as a starting point. According to , it seems running “reportbug kernel” should do the job. 1. https://wiki.debian.org/DebianKernelReportingBugs KiBi.
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