On Sat, 2015-11-07 at 11:28 +0100, Laurent Bigonville wrote: > Le 07/11/15 02:23, Ben Hutchings a écrit : > > On Sat, 2015-11-07 at 00:24 +0100, Laurent Bigonville wrote: > > > reassign 779515 linux-image-4.2.0-1-amd64 > > > severity 779515 important > > > thanks > > > > > > On Sun, 01 Mar 2015 18:47:54 +0000 Ben Hutchings > > > wrote: > > > > > > > I've enabled the kernel's qxl driver, but disabled by default so that > > > > it doesn't conflict with wheezy's version of xserver-xorg-video-qxl. > > > > > > > > Please install a modprobe configuration file with the line: > > > > > > > > options qxl modeset=1 > > > > > > > > (When I tried this on a VM host with virt-manager and QEMU from sid, > > > > the qxl driver complained of missing features, so KMS still didn't > > > > work. However, the fall-back to UMS still worked.) > > > > > > Shouldn't the qxl kernel module be enabled by default in unstable now > > > that the xserver-xorg-video-qxl package has been updated? > > [...] > > > > Only if xserver-xorg-video-qxl in jessie works properly with KMS. Is > > that the case? > OK, so I tried on a jessie VM with jessie kernel and it gave me a > backscreen. That's odd. I've now tried with a guest running kernel and xserver- xorg-video-qxl from jessie and the host running QEMU and libvirt from sid. This seemed to work properly. Given your result, it would seem that the qxl kernel driver in jessie can't be relied on and we should not change it. > I updated to the kernel from bpo (4.2) and now gdm is starting properly. Then I think it's safe to enable the qxl driver by default now, as you wanted. > How can I verify if the issue you got is now fixed? I see this in the > Xserver logs: > > [KMS] Kernel modesetting enabled. > > BTW, without qxl kernel driver, I see some ugly yellowish vt. I see that too. It was the same when using cirrus in UMS mode. Probably a QEMU bug. Ben. -- Ben Hutchings Unix is many things to many people, but it's never been everything to anybody.
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