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IRIX Patches 1995 March
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SGI IRIX Patches 1995 Mar.iso
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patchSG0000058
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ch1.z
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1995-03-10
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199 lines
- 1 -
1. _P_a_t_c_h__S_G_0_0_0_0_0_5_8__R_e_l_e_a_s_e__N_o_t_e
This release note describes patch SG0000058 to IRIX 5.2.
1.1 _S_u_p_p_o_r_t_e_d__H_a_r_d_w_a_r_e__P_l_a_t_f_o_r_m_s
Please read the following bug descriptions to determine
which CPU types are supported for each fix. This patch
contains bug fixes for XS, XS24, XS24Z, XZ, Elan, and
Extreme graphics on Indigo, Indigo2,and Crimson machines.
The heterogeneous Indigo2 dual-head XL-Extreme is NOT
supported in any of these fixes, but will be supported in
the 5.3 release. The software cannot be installed on other
configurations.
1.2 _B_u_g_s _F_i_x_e_d _b_y _P_a_t_c_h _S_G_0_0_0_0_0_5_8 (_i_n_c_l_u_d_e_s _b_u_g _f_i_x_e_s _f_r_o_m
_P_a_t_c_h _S_G_0_0_0_0_0_1_9)
This patch contains fixes for the following bugs in IRIX
5.2. Bug numbers from Silicon Graphics bug tracking system
are included for reference.
+o (Indigo/Indigo2) GR2 FIFO handler performance - When
the graphics FIFO becomes full, graphics processes are
held off until the FIFO drains below an acceptable
level. However, in 5.2 the FIFO drain level is only
checked when graphics processes are scheduled, and the
normal system clock time slice is about 10ms.
Fix description - The performance improves for
applications which frequently cause the graphics FIFO
to back up. Once the graphics FIFO becomes full, a
routine to check the FIFO drainage will now be
scheduled on the fast clock time slice which is about 1
ms. (Bug #211967)
+o (Indigo/Indigo2) volume rendering DMA - The pixel DMA
was timing out because the DMA count between the HQ and
DMA controller was off by two words. When it seems that
the HQ is in this state, send down two dummy words and
print messages in the /usr/adm/SYSLOG. This fix is only
enabled when some kernel variables are set through a
special program, tailored for the customer reporting
the fix.
+o (Indigo/Indigo2/Crimson) Avoid bus timeouts when
reading a GR2 register from a non-GR2 board installed
in one of the GIO slots. Check if the GR2 address
space is valid for that board.
- 2 -
_T_h_e _f_o_l_l_o_w_i_n_g _b_u_g _d_e_s_c_r_i_p_t_i_o_n_s _a_r_e _f_r_o_m _P_a_t_c_h
_S_G_0_0_0_0_0_1_9:
+o (Indigo/Indigo2/Crimson) Colormap updates will
sometimes update the wrong color cell. This is the
result of destructive interactions between colormap
updates and swapbuffer requests. (Bug #208845)
+o (Indigo/Indigo2/Crimson) There is a performance problem
when OpenGL applications render to both overlay and
normal plane windows. This can be as a result of two
or more competing applications, or of a single
application rendering to multiple windows. The problem
manifests itself when both normal and overlay windows
are clipped, such that the unclipped portions of the
windows consist of more than two rectangles. This patch
improves the situation for common cases, but there will
still be a dramatic loss in rendering performance if
the window is cut up into more than four pieces. (Bug
#209449)
+o (Indigo/Indigo2/Crimson) On power up, the stipple
register isn't always initialized properly. This is
only a problem for X rendering, and manifests itself as
X vectors not being visible at all, or being drawn as
dashed lines. (Bug #209715)
1.3 _S_u_b_s_y_s_t_e_m_s__I_n_c_l_u_d_e_d__i_n__P_a_t_c_h__S_G_0_0_0_0_0_5_8
This patch release includes these subsystems:
+o patchSG0000058.eoe1_sw.unix
+o patchSG0000058.x_eoe_sw.Server
1.4 _I_n_s_t_a_l_l_a_t_i_o_n__I_n_s_t_r_u_c_t_i_o_n_s
Because you want to install patches for only the problems
you have encountered, patch software is not installed by
default. After reading the descriptions of the bugs fixed in
this patch, determine the patches that meet your specific
needs.
Patch software is installed like any other Silicon Graphics
software product. It must be installed from the miniroot.
Follow the instructions in your _I_R_I_S _S_o_f_t_w_a_r_e _I_n_s_t_a_l_l_a_t_i_o_n
_G_u_i_d_e to bring up the miniroot form of the software
installation tools.
- 3 -
Follow these steps to select a patch for installation:
1. At the Inst>prompt, type
iiiinnnnssssttttaaaallllllll ppppaaaattttcccchhhhSSSSGGGG_0_0_0_0_0_5_8
where _0_0_0_0_0_5_8 is the patch number.
2. Select the desired patches for installation.
3. Initiate the installation sequence. Type
IIIInnnnsssstttt>>>> ggggoooo
4. You may find that two patches have been marked as
incompatible. If this occurs, you must deselect one
of the patches.
IIIInnnnsssstttt>>>> kkkkeeeeeeeepppp ppppaaaattttcccchhhhSSSSGGGG_0_0_0_0_0_5_8
where _0_0_0_0_0_5_8 is the patch number.
5. After completing the installation process, exit the
_i_n_s_t program by typing
IIIInnnnsssstttt>>>> qqqquuuuiiiitttt
To remove a patch, use the _v_e_r_s_i_o_n_s _r_e_m_o_v_e command as you
would for any other software subsystem. The removal process
reinstates the original version of software unless you have
specifically removed the patch history from your system.
vvvveeeerrrrssssiiiioooonnnnssss rrrreeeemmmmoooovvvveeee ppppaaaattttcccchhhhSSSSGGGG_0_0_0_0_0_5_8
where _0_0_0_0_0_5_8 is the patch number.
To keep a patch but increase your disk space, use the
_v_e_r_s_i_o_n_s _r_e_m_o_v_e_h_i_s_t command to remove the patch history.
vvvveeeerrrrssssiiiioooonnnnssss rrrreeeemmmmoooovvvveeeehhhhiiiisssstttt ppppaaaattttcccchhhhSSSSGGGG_0_0_0_0_0_5_8
where _0_0_0_0_0_5_8 is the patch number.