** Description changed: + [Impact] + + * Prevents from using X at all with some VIA chipsets - a segfault + occurs and is logged in Xorg.log + + [Test Case] + + * Start X on a affected hw (e.g. VX900). + + * Examine Xorg.log after crash. + + [Regression Potential] + + * This is a bug fixed upstream. + + * The fix is a one-liner with minimal impact. + + [Other Info] + + * Original bug description: + There is a segfault in Xorg.log visible when starting X on Trusty 14.04 with the following hardware: 00:01.0 VGA compatible controller [0300]: VIA Technologies, Inc. VX900 Graphics [Chrome9 HD] [1106:7122] (prog-if 00 [VGA controller]) - Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000] - Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- - Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- - Latency: 64 - Interrupt: pin A routed to IRQ 10 - Region 0: Memory at fb000000 (32-bit, non-prefetchable) [size=16M] - Region 1: Memory at fc000000 (32-bit, non-prefetchable) [size=16M] - Region 2: Memory at f0000000 (32-bit, prefetchable) [size=128M] - Expansion ROM at febf0000 [disabled] [size=64K] - Capabilities: [60] Power Management version 2 - Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) - Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- - Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit+ - Address: 0000000000000000 Data: 0000 + Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000] + Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- + Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- + Latency: 64 + Interrupt: pin A routed to IRQ 10 + Region 0: Memory at fb000000 (32-bit, non-prefetchable) [size=16M] + Region 1: Memory at fc000000 (32-bit, non-prefetchable) [size=16M] + Region 2: Memory at f0000000 (32-bit, prefetchable) [size=128M] + Expansion ROM at febf0000 [disabled] [size=64K] + Capabilities: [60] Power Management version 2 + Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) + Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- + Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit+ + Address: 0000000000000000 Data: 0000 Snip of the Xorg.log: [ 549.260] (EE) Backtrace: [ 549.260] (EE) 0: /usr/bin/X (xorg_backtrace+0x4f) [0xb77551bf] [ 549.261] (EE) 1: /usr/bin/X (0xb75ac000+0x1acfa4) [0xb7758fa4] [ 549.261] (EE) 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb7589410] [ 549.261] (EE) 3: /usr/lib/xorg/modules/drivers/openchrome_drv.so (0xb6c84000+0x13ccc) [0xb6c97ccc] [ 549.261] (EE) 4: /usr/bin/X (InitOutput+0xb43) [0xb762f623] [ 549.261] (EE) 5: /usr/bin/X (0xb75ac000+0x410c7) [0xb75ed0c7] [ 549.262] (EE) 6: /usr/bin/X (0xb75ac000+0x2ae1e) [0xb75d6e1e] [ 549.262] (EE) 7: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf3) [0xb7197a83] [ 549.262] (EE) 8: /usr/bin/X (0xb75ac000+0x2ae54) [0xb75d6e54] - [ 549.262] (EE) + [ 549.262] (EE) [ 549.262] (EE) Segmentation fault at address 0x0 - [ 549.262] (EE) + [ 549.262] (EE) [ 549.263] (EE) Caught signal 11 (Segmentation fault). Server aborting - [ 549.263] (EE) - [ 549.263] (EE) + [ 549.263] (EE) + [ 549.263] (EE) [ 549.263] (EE) Please also check the log file at "/var/log/Xorg.1.log" for additional information. - [ 549.263] (EE) + [ 549.263] (EE) [ 549.269] (EE) Server terminated with error (1). Closing log file.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-openchrome in Ubuntu. https://bugs.launchpad.net/bugs/1554004 Title: Segfault on X startup with VX900 To manage notifications about this bug go to: https://bugs.launchpad.net/openchrome/+bug/1554004/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
