On Thu, 2018-09-13 at 19:21 +0100, John Talbut wrote: > The only errors that show in Xorg.0.log are: > > [ 420,876](EE) modeset(0): [DRI2] No driver mapping found for PCI > device 0x8086 / 0x0be1 > [ 42.877] (EE) modeset(0): Failed to initialize the DRI2 extension > > I.e. the graphic controller is a VGA compatible controller: Intel > Corporation Atom Processor D2xxx/N2xxx Integrated Graphics Controller > (rev 09) > > Questions, for a start: > 1. What is supposed to provide the mapping for PCI device 0x8086 / 0x0be1?
There's a table built into the X server. In this case, you have the misfortune to own a Cedarview chip, which is of the Poulsbo family of "not really Intel, actually PowerVR" of devices and thus there is no open source 3D support. That the code considers this an "error" condition is perhaps unwarranted. > 2. Is this error likely to be causing the UI to lock up? Probably not, no. The fact that lightdm seems to be restarting makes me suspect there is some other error in the X log that simply doesn't begin with (EE). The complete log might be useful. It's possible that what's really happening is the _session_ is failing to initialize, and the X server is terminating normally because the last client disconnected. A quick thing to check is to run 'X -retro' from a vt. If that brings up the classic root weave and X pointer, then X is working fine and the session is to blame. You may need to boot to runlevel 3 to test this, as otherwise lightdm would win the race. - ajax _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: https://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
