Created attachment 123574 [details]
Xorg.0.log

Hello !

I'm having the same install (regular Debian Jessie) on many Intel systems (for theirs open source graphic cards, no extra graphic card), working fine on all of them, except one (all others are older). (tried to install twice, install file have been checked).

CPU: Intel Celeron  N3150
"card": Intel HD Graphics 400 (Braswell)

All is actually going fine, I can use X with kde. Until I try to do a console login, for instance with ctrl-alt-F1, and then X crashes !

See backtrace and xorg logfile attached.

Thanks!

[  3352.388] (EE) Backtrace:
[  3352.389] (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x7fb6bfdebd46]
[  3352.389] (EE) 1: /usr/bin/X (0x7fb6bfc35000+0x1baf29) [0x7fb6bfdeff29]
[  3352.390] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb6bd927000+0x350e0) [0x7fb6bd95c0e0]
[  3352.390] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb6bd927000+0x92040) [0x7fb6bd9b9040]
[  3352.391] (EE) 4: /usr/lib/xorg/modules/drivers/vesa_drv.so (0x7fb6b94fa000+0x3e83) [0x7fb6b94fde83]
[  3352.391] (EE) 5: /usr/bin/X (xf86VTLeave+0x107) [0x7fb6bfccb2e7]
[  3352.391] (EE) 6: /usr/bin/X (WakeupHandler+0x6b) [0x7fb6bfc910db]
[  3352.392] (EE) 7: /usr/bin/X (WaitForSomething+0x1c3) [0x7fb6bfde8ff3]
[  3352.392] (EE) 8: /usr/bin/X (0x7fb6bfc35000+0x57211) [0x7fb6bfc8c211]
[  3352.393] (EE) 9: /usr/bin/X (0x7fb6bfc35000+0x5b596) [0x7fb6bfc90596]
[  3352.393] (EE) 10: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fb6bd948b45]
[  3352.394] (EE) 11: /usr/bin/X (0x7fb6bfc35000+0x4590e) [0x7fb6bfc7a90e]
[  3352.394] (EE) 
[  3352.394] (EE) Segmentation fault at address 0x0
[  3352.394] (EE) 
Fatal server error:
[  3352.395] (EE) Caught signal 11 (Segmentation fault). Server aborting
[  3352.395] (EE) 
[  3352.395] (EE)