On Sat, Jun 21, 2014 at 01:57:32PM +0200, Thomas Richter wrote: > Hi Daniel, dear intel experts, > > this a bug report for the intel i945GM integrated graphics chipset (*NOT* > the 830GM this time). Since at least 3.12.0, but also with the latest > intel-drm-nightly, I have no boot console on the 945GM chipset, the screen > just remains blank. /var/log/messages shows an assertion failure, see the > attached kernel log for details, booted with drm.debug=0x0e. > > The problem appears if the kernel is booted with the vga=792 option - note > that the panel in this laptop is a 1024x768 and thus this is the native > resolution. The problem does not appear with a text console. > > This sounds remarkably similar to the deadlock the 830GM had a while ago > when booting with a graphical console, also with vga=792. Should be unrelated - more likely it's some fumble in the modeset sequence, i945 is known to be picky in that area. Just to confirm: Latest 3.16-rc kernels are still broken? > This is the kernel warning: > > Jun 21 13:44:26 kahvi kernel: [ 4.780120] WARNING: CPU: 1 PID: 239 at > drivers/gpu/drm/i915/intel_display.c:1307 assert_planes_disabled+0x110/0x160 > [i915]() > Jun 21 13:44:26 kahvi kernel: [ 4.780126] plane B assertion failure, > should be off on pipe B but is still active Can you please boot with drm.debug=0xe and grab a new dmesg with the backtrace? > The machine is a Fujitsu Siemens T4215. lspci lists the following hardware: > > 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and > 945GT Express Memory Controller Hub (rev 03) > 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, > 943/940GML Express Integrated Graphics Controller (rev 03) > 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, > 943/940GML Express Integrated Graphics Controller (rev 03) > 00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition > Audio Controller (rev 02) > 00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 > (rev 02) > 00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 > (rev 02) > 00:1c.2 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 3 > (rev 02) > 00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI > Controller #1 (rev 02) > 00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI > Controller #2 (rev 02) > 00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI > Controller #3 (rev 02) > 00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI > Controller #4 (rev 02) > 00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI > Controller (rev 02) > 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) > 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge > (rev 02) > 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller > (rev 02) > 00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA > Controller [AHCI mode] (rev 02) > 00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02) > 02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8055 PCI-E > Gigabit Ethernet Controller (rev 12) > 05:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN > [Kedron] Network Connection (rev 61) > 08:03.0 CardBus bridge: O2 Micro, Inc. OZ711MP1/MS1 MemoryCardBus Controller > (rev 20) > 08:03.1 CardBus bridge: O2 Micro, Inc. OZ711MP1/MS1 MemoryCardBus Controller > (rev 20) > 08:03.2 SD Host controller: O2 Micro, Inc. Integrated MMC/SD Controller > 08:03.3 Bridge: O2 Micro, Inc. Integrated MS/xD Controller > > As soon as X is initialized, graphics work again, I just don't have a boot > console. So once X is running fbcon also works again, i.e. it's only the initial boot console that's black? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
